Introduction and motivation

In an effort to get more content on Tildes, I want to try and give an introduction on several 'hot topics' in semiconductor physics at a level understandable to laypeople (high school level physics background). Making physics accessible to laypeople is a much discussed topic at universities. It can be very hard to translate the professional terms into a language understandable by people outside the field. So I will take this opportunity to challenge myself to (hopefully) create an understandable introduction to interesting topics in modern physics. To this end, I will take liberties in explaining things, and not always go for full scientific accuracy, while hopefully still getting the core concepts across. If a more in-depth explanation is wanted, please ask in the comments and I will do my best to answer.

Today's topic

I will start this series with an introduction to spintronics and spin transistors.

What is spintronics?

Spintronics is named in analogy to electronics. In electronics, the flow of current (consisting of electrons) is studied. Each electron has an electric charge, and by pulling at this charge we can move electrons through wires, transistors, creating modern electronics. Spintronics also studies the flow of electrons, but it uses another property of the electrons, spin, to create new kinds of transistors.

What are transistors?

Transistors are small electronic devices that act as an on-off switch for current. We can flip this on-off switch by sending a signal to the transistor, so that the current will flow. Transistors are the basis for all computers and as such are used very widely in modern life.

What is spin?

Spin arises from quantum mechanics. However, for the purpose of explaining spin transistors we can think of an electron's spin as a bar magnet. Each electron can be thought of as a bar magnet that will align itself to a nearby magnetic field. Think of it as a compass (the electron) aligning itself to a fridge magnet when it's held near the compass.

What are spin transistors and how do they work?

Spin transistors are a type of transistor whose on-off switch is created by magnets. We take two bar magnets, whose north poles are pointed in the same way, and put them next to each other, leaving a small gap between them. This gap is filled with a material through which the electrons can move. Now we connect wires to the big bar magnets and let current (electrons!) flow through both magnets, via the gap. When the electrons go through the first magnet, their internal magnets will align themselves to the big bar magnet. However, once they are in the gap the electrons' internal magnets will start rotating and no longer point in the same direction as the big bar magnets. So that when the electrons arrive at the second magnet, they will be repelled just like when you try to push the north poles of two magnets together. This means the current will not flow, and the device is off! So, how do we get it to turn on?

By exposing the gap to an electric field, we can control the amount of rotation the electrons experience (this is called the Rashba effect). If we change the strength of this electric field so that the electrons will make exactly one full rotation while crossing the gap, then by the time they reach the second big bar magnet they will once again be pointing in the right direction. Now the electrons are able to move through the second big bar magnet, and out its other end. So by turning this electric field on, the spin transistor will let current flow, and if we turn the electric field off, no current will flow. We have created an on-off switch using magnets and spin!

That's cool, but why go through the effort of doing this when we have perfectly fine electronics already?

The process of switching between the on and off states of these spin transistors is a lot more energy efficient than with regular transistors. These types of transistors leak a lot less too. Normal transistors will leak, meaning that a small amount of current will go through even when the transistor is off. With spin transistors, this leak is a lot smaller. This once again improves the energy efficiency of these devices. So in short, spin transistors will make your computer more energy efficient. This type of transistor can also be made smaller than normal transistors, which leads to more powerful computers.

Feedback and interest

As I mentioned, I wrote this post as a challenge to myself to explain modern physics to laypeople. Please let me know where I succeeded and where I failed. Also let me know if you like this type of content and if I should continue posting other similar topics in the same format.

There's lot of academia out there that suggests that everyone has blindspots, topics and issues that we take with so much certainty that we would not even think to question them, people who so rarely enter into our concerns that we do not think to consider their needs or concerns, etc.

It's hard to know exactly what our own blindspots are because by their very nature as soon as they are identified they lose some of their power. This sort of self-awareness is difficult even on the best day, but it allows us to more reasonably address people who don't hold our views, so I think the exercise is justified.

This topic is intended to be introspective. Wherever you identify politically (left, right, moderate, anarchist, libertarian, the works), what are some topics and groups that your political people tend to struggle to focus on?

[I'm tagging this as "adult", for purposes of open discussion, with apologies to anyone who may consider the topic inflammatory or sensationalistic.]

Based on discussion of loneliness elsewhere, I'm curious as to what adaptive measures people undertake to promote life satisfaction in the face of environmental/cultural/social stressors.

The word "drug" is used very loosely here, and basically refers to any strategy for purposefully altering neurochemistry - in addition to licit or illicit substance intake, it could be endorphin-boosting exercise, going out with friends, naps, particular reading genres, a good meal, games, direct brain stimulation, meditation, sexual activity, long walks in the country, or whatever.

I'm also taking for granted the proposition that intentionally seeking beneficial neurochemical states is a human activity that everyone participates in, whether they're aware of it or not, and desirable as long as it harms no one.

This is not an attempt to incite, advocate for, or excuse breaking any applicable laws, but a request for information on what people actually do and prefer. If you're concerned about potential legal implications of confessing to an illicit favorite, please discuss in terms of "a friend/someone I know, likes substance/activity x because y".

"Favorite" excludes strategies you've found harmful or destructive, but discussion and/or warning is worthwhile if you feel like it.

I'll start off by saying I have an acquaintance who finds psilocybin micro-dosing very effective at inducing positive emotional balance, mental focus and good sleep regulation.

As a lurker on the somethingawful forums one of my favorite features is a button which will show all the posts a single person has made in a thread. It'd be really handy if someone (like the OP) is answering questions about a topic. It's really nice to have on a more traditional forum website, but I'm not sure how useful it'd be here. Regardless, I thought I would suggest it.

Here is an example: Before and After

This question stemmed from a friendly argument my S.O. and I had involving The Sims. She thought it was the weirdest thing ever to try and create myself within the game. I understand the idea of truly creating a new character, but my first impulse is always to create myself and then behave how I normally would in whatever game I'm playing. I don't know if this is laziness on my part, or some sort of subconscious effort to maximize immersion.

Disclaimer: I do often create characters that don't just emulate myself, but it's almost always after I've finished my first play-through. I'm not averse to role-play AT ALL.

I noticed it spans further than character creation too. Like, if there's a pool of characters to pick from, I almost always pick one that looks the most like me, or one that I relate the most with. My S.O. will pick whichever one she's feeling at that time (usually the cutest). I've also noticed that I'm more apt to consistently pick that same character, while she is more likely to switch it up every so often.

One last observation I made that I think ties closely to this topic: When I'm playing a game, my mentality is always "I'm going to do this, then I'm going to do this. Did you see what I just did?!" etc. I see it from a first-person perspective, even if I happened to create a character that does not emulate myself. When she plays, it's always "Look what he's doing, oh man my guy did this" and verbalizes the game from a third-person perspective.

What's your take on this? What's your mentality when you game? Do you think there is a fundamental mental split among players? Is it because I game drastically more than her or started gaming sooner in my life? I'd love to hear some other perspectives on this.

I've been watching the history of M.I.T., STS 050, which repeatedly makes the point that the M.I.T. course catalogue is (mostly) ordered by date of creation, particularly through the first 15 or 16 items.

There are some twists. Materials (3) was originally "Mining and Metallurgy", Brain & Cognitive Science (9 was originally "Psychology". But as an outline of technology, and possible ~tildes topic organisation framework, it is useful.

For me, it's definitely the topic particles in Japanese. It just seems like a really interesting thing that is a reason enough to want to learn Japanese, even excluding other great features it has. Here some info on them.

We've been having a smattering of art, poetry, and photo participation posts, such as this, and this, and this, and this.

We seem to have enough ~tilders to have a schedule of sorts, but not enough to have each activity every week. How about we rotate weekly activities for a while and see how it goes? I'm thinking we have enough interest for a series of visual/craft based threads and a series of writing based threads. For example:

July 3-9th Photography (subject exploration or technique)
July 10-16th What are you making now?/Speedart
July 17-23rd Photography (topic or equipment)
July 24-30th What are you making now?/Media challenge

July 3-9th Freestyle Writing (up to a thousand words)
July 10-16th Themed Drabbles
July 17-23rd Poetry format challenge
July 24-30th It was a dark and stormy night

Please note that these are suggestions and not an arbitrary bid to codify content or become TEH LEADER. I just think it would be fun to have an activity to look forward to every week. We could even just sign up for hosting a week's topic, and whoever is in charge of the week picks the activity.

What does everyone think?

This is a hard topic for me personally, so please be gentle. I am at my core an institutionalist and an incrementalist, so I tend to want to both value and improve institutions through incremental (bit-by-bit) change.

A common concern and criticism of people who are impatient with incremental changes is that there would be tons of unintended consequences. While that concern resonates with me, it clearly doesn't seem to resonate with much of anyone else right now.

So in this I feel alone, frankly, and a lot of the reason for that loneliness is because incrementalism seems to have been firmly rebuked by both left and right wing political groups around the world. Help me understand what's happening. Where is incrementalism failing for you? Do you see any role for bit-by-bit change?

The scope of this thread could expand to the high heavens, so please understand how widely varied the examples might be that we each might bring to this discussion.

Wanted to see if we could get some conversations going with any freelancers who may be around. I figured a good place to start is with one of the more commonly discussed topics, which is the online marketplaces catering to freelancers.

These days, Upwork seems to have gobbled up a huge chunk of that market, while garnering plenty of criticism and complaints along the way for how they handle it. The graphic design space seems to have a little more competition in marketplaces, with 99designs being a frontrunner it seems. Truthfully, there just aren't that many platforms to pick from regardless of your specialty. Which can be a positive, as it provides a centralized place to look for and post available work, can increase exposure to the freelance market as a whole, and ensures you don't have to maintain profiles across numerous platforms which can be far too time consuming sometimes. But of course there are many downsides that come along with that.

The standard advice that comes with such discussions is to ignore the online marketplaces entirely because of those downsides. Competing against an international labor pool, as well as an under-experienced labor pool much of the time, in a format that heavily encourages price competition above other factors can be disastrous for your bottom line (and your sanity). These platforms also generally remove a lot of the negotiating power that a freelancer needs to leverage, as it is much more difficult to establish the captive audience that can be built with more personal interactions.

And frankly, that standard advice has continued to be my own, both for my career as well as to others who may seek such advice. But it does make me wonder if there is a better way to do it. Of course as a developer I'm always looking to find a way to solve problems, so I can concede I may be looking for solutions in a place that is misguided to try to fix.

What has been your experiences with freelance online marketplaces? What advice do you give when asked about it? What would you like to change?

I have been using Tildes for about a week now. I have come over from Reddit where I am primarily a lurker. I lurk because I often feel my thoughts and opinions on topics and discussions have been touched on because discussions are already hundreds of comments deep by the time I arrive. The biggest positive with Tildes is the fact that the community is currently small and I read the post/sarticles that interest me instead of jumping straight into the comments to be given a synopsis. I now read more than just the headline.

I still have not found my 'voice' in regards to posting comments related to articles/stories that I have read. I think it is because I haven't found a discussion that I am really interested in. I have posted a couple of news articles that provide information about the part of the world I am in but, while they interested me, I didn't feel the need to discuss their contents further so I didn't add any comment to start a conversation to the post.

Regarding providing some more content to the site. My hobbies include, like everyone else, traveling, reading, and photography. I am no where near being an influential voice in any of these! I am not interested in having a travel blog or a website but I would like to provide information, incase someone else here is interested or has experiences too. For example, I recently took a short weekend trip from Bangkok, Thailand to Ayutthaya, Thailand. I rode the train, visited the sites, visited a bar, ate some food, and stayed the night. I want to provide a write up on my experiences and thoughts of this trip. Is a post in ~hobbies with the tags of: thailand, ayutthaya, bangkok, train the way to go?
What do y'all think?

Sharing photographs - Taking pictures is another hobby I share with everyone else. I enjoy sharing pictures I am proud of. I tend to post to r/nocontextpics, because I like their rules of no back story in the title. I also post to location specific sites. I do this to show off my pictures and to feel good from earning points. I do not post pictures to facebook very often because I like having the feel of anonymity. I don't want to be perceived as a pretentious twat. How does everyone feel about picture posts in ~hobbies with the tag(s) like: location, device used, etc..

My problem would be not 'spamming' photos. With the age of the site, and my brief interaction with it, no one wants to see 2+ picture posts from one user in the ~hobbies group.
Any thoughts on etiquette or rules for picture posts? Allow: Yes/No?

Last night I posted a topic called "real sad boi hours", a ritualistic kind of post I've carried over from Reddit. I chose to post it in ~talk since the description for the group says it is for "Open-ended discussions with fellow Tildes users, casual or serious", and I felt there is nothing more open-ended or casual than real sad boi hours. At first, the topic was meant just as it usually does on Reddit. Got a few responses in which people talked about their day and how they were feeling. But right now, the most voted comment is complaining about how we need to restrict invitations to prevent low effort users like me from joining. One thing the user said was that is is obvious there are users joining who have not read the manifesto. I'm just going to spew my own opinion on a few points here:

1. I don't think gatekeeping is a solution, especially since iirc this site is not going to be permanently invite-only. Not to mention that's just a childish solution anyway.

2. I don't know what is expected from ~talk. As I said before, I legitimately believe my nightly "real sad boi hours" posts fit exactly what the description of the group says. However, that is up to interpretation I suppose.

3. If my post was against some rule (which apparently roughly 17 users believe it is), there should be some kind of rule set or moderation set in place (though I understand why there isn't, the site being private still and all). My impression so far has been that if you don't like content, you just ignore it. But now I'm seeing that apparently, people don't like to ignore it. They want me gone.

4. Is every user expected to read the manifesto? You may be able to get away with this while it's private (and even then, there is still users like me who only read a few pages) but if/when this site goes public, expecting every user or even just most the users to read the manifesto is a pipe dream. As far as I can tell, the reddiquette (which I have also not read) is shorter than the manifesto and nobody reads that either unless they need to. The only reason I know the reddiquette is because I've picked up on bits of it as time went on.

Maybe I'm just a butt-hurt bitch that people complained about me and I can't take criticism. I'm sure people who disliked my post will think that is it. I also may have a skewed perception of what this site is. I view it as an improvement upon Reddit and honestly I think some of this innovation may work great, which is why I'm here in the first place. I want to hear your take on what I said, and anything else you'd like to add.

Could we get new post ordering: something like reddit Hot system?

Now, the ordering by activity is great, but the big issue with it is, that when you go to less-active ~, you only see two or three topics. Even on front page, there are just 15 or 20 topics. I know, it's because I limit threads to only several days, but there is problem when I set limit up to week, or two: there are very old threads on the front page right at the top.

So could we get something like reddit has? Display posts according to upvotes/time (comments?), but do not limit them to few days and show them at least +- chronologically - so no two weeks old posts at the top of front page.

Maybe this could be achieved just by tweaking the current activity order by boosting young threads more and vice versa.

Partially inspired by the Abduction as Romance topic.

Both the Damsel in distress and Women in refrigerators tropes exists heavily in both written and screen media, especially in the comic book world, where women are reduced to easy plot devices to tell a man's story.

Women are "important" in that they matter to a man, usually the hero. They are mothers, daughters, girlfriends, but nothing more. They are defined purely by their relationships to the hero. If they are depowered, maimed or murdered, the tragedy is in the hero's loss, not hers.

People, men and women, do get hurt and die in fiction and in reality, and I'm definitely not saying this cannot be done on the page. A guy grieving his girlfriend's death doesn't automatically make her a "refrigerator girl".

For example, Gwen Stacy, who may or may not have been accidentally killed by Spiderman in his attempt to save her. Her death, and Peter's reaction afterwards has always been very organic and real to me. Her death didn't feel frivolous, and readers felt the loss as much as Peter.

As for an example of a damsel/refrigerator girl, (there are too many to choose from), let's go with Mr. Freeze's wife, Nora, who is literally in a fridge. I'm pretty sure there's no even passing Batman reader who doesn't know Nora. But do we honestly know anything about her?

Thoughts? Any common damsel/refrigerator girl that you think actually shouldn't be classified as such?

Website: https://hacksummit.org

Honestly I'm not following this block-chain thing that much closely (apart from knowing the theory of how it works on a basic level) and I'm curious to see if this event can help me get what it is all about :)

Anyone interested in a free pass can send a PM to me (do not reply here please) and it would be interesting if we use this topic to talk about your previous experience with the event or block-chain in general.

I'm sure some of you might have this as a hobby or more of a profession.

I'm pretty new to it as I haven't really done much at all yet, and I'm looking to create a sheath for a knife. Are there any good videos to watch before diving into it, or any articles that come to mind?

Think of this as a place to discuss this topic as I didn't see one posted yet. Any input will be helpful!

Since it doesn't look like @basicbaconbitch is around (or they just intended it to be a one-time thing), I guess I'll post this!

What have you been reading? What do you think of it? No need to do a big review if you don't feel like it, but I think we'd all love to hear your thoughts! Recs or discussion of each others' reading habits is encouraged!

--

Quick question: Do we want regular threads like these? Personally I think ~books is lacking a place to just drop in and talk about something that isn't news or a specific discussion topic, but maybe I'm alone on that.

Inspired by @Marszalot 's topic about humor podcasts I would like to see you guys have any good recommendations about high performance mindset topic.

Recently I stumbled across Cindra Kamphoff's podcast at Spotify and I've been enjoying it a lot. Most of them are short, which suits very well my time to walk from home to the office (20 to 30 minutes), but it's weekly, so I'm searching for more sources to listen about high performance mindset / habits.

Hey ~ers, I'd like to keep a weekly discussion going on this topic (every Wednesday or so?). Let me know if this isn't something you want to see in the future, I always liked these, but maybe not everyone does? Last one got a lot of interesting posts, let's see how it goes this time!

I've been playing Grim Dawn quite a bit lately. I've kickstarted it back in the day, but never got around to really playing it after the early access period. I was burned out on Diablo clones at the time: Torchlight 2, Victor Vran, Van Helsing, etc. I think the break did me good, as playing it fresh is quite enjoyable. There's a good variety of classes and builds, fun abilities, and tons of gear number crunching (playing thunder smashing shaman now). Just the way I like it! I'm hoping to snag one of the DLCs once I reach a high enough level and play with my friends on one of the unlocked hardcore difficulties.

So I was thinking the other day -- is there any good reason to allow voting from the main ~'s page? For clarity in this discussion, I'm talking about this view.

Some pro's and con's for removing the vote button from the main page:

Pro:

• Discourages "drive-by" voting. We all (mostly?) know that reddit in particular is notorious for having highly up-voted posts that most users read the headline / top-comment and not the article itself. This is particularly noxious for political posts, as often times a vote on a post is an extension of one's own biases / beliefs, rather than an engagement on the topic at hand. This hasn't reared it's head to the same extent on ~'s yet (this post with 15 votes / and only 1 comment would seem to be the closest I can find), but I think it would be a mistake to think that this sort of behavior wouldn't migrate over from reddit. Other reasons for voting on a post without at least getting into the comments are equally bad e.g.: "Oh, I like that band / song / movie / whatever" -- this is a key driver of recycled content on /r/music or movies or tv etc. This reason alone is enough for me to consider removing front-page voting a net-positive

• The user is forced to enter the comments to vote, wherein they may actually read something that sparks their desire to read the thing / interact with the post. The goal on ~'s is to promote substantive discussion, and I think this would be an interesting tool to try to direct users to said discussion.

Cons

• It's more inconvenient, but hey -- so is putting the comment box at the bottom of the page (and I think that's a good idea on net as well)

• UI inconsistency -- this is a bad thing, but we've got a lot of smart computer people on here. We can probably figure out some way to make this work.

• It doesn't actually force the user to read / listen / interact with the submission, just suggests that they do. But hey, let's not let the perfect be the enemy of the good, eh?

Hanging Questions

• What about voting on ~group pages? My off-the-cuff idea would be that voting on ~music.world.calypso would be a good thing (to promote organic growth of quality posts from small ~groups), but not voting on overarching groups (~music) -- but then the UI issue rears' it's ugly head

• What about comment / submission voting from other places e.g.: user-pages, notifications, inbox replies, etc.

So I noticed the entire front page getting clogged with "question" type posts, ranging from "what are your favorite..." to "pls help me choose..." type posts. This might be mainly due to "activity" sorting (sorting by votes is a little better), but that's still the default and doesn't change the general dominance. I took this screenshot earlier and I did not see a non-question post without scrolling. None of them were from ~talk, either.

I know people have different views on this, but I remember from my brief time moderating that it's generally a good idea to restrict these types of posts, for the simple reason that people love to dump their "favorite" lists, which makes these types of threads dominate the frontpage, while they tend to produce always the same responses (intuition might suggest they produce great discussion but that's usually not the case). They're best pushed into specific subreddits (subgroups?).

I think this is a rather small and specific issue, but it might be a taste of future difficulties with voting/moderation. Banning content for being disruptive/abusive is one thing, but the best places I know for discussion also ban via more subtle rule sets. They take measures into account (often at the cost of facing a ton of backlash from users seeing their posts removed for "unfair" reasons) that keep one type of post from taking over the frontpage, potentially drowning out more interesting ones. I'm still trying to picture how this would translate from Reddit's moderation model to Tildes'.

One way would be to open up a subgroup for any sufficiently large category of posts and give moderation the option to move posts to a subgroup that people can opt-out from. Another is very diligent tagging and filtering. My concern is that neither could produce the complex, fine-grain type of moderation that distinguishes really good subreddits (yea, they exist!) from spammy ones. "Hide all posts tagged 'question'" could hide "what's your favorite...?" type posts but also posts that ask a really deep and interesting question. So would you filter "question && favorite"? That turns filtering into almost a scripting job. It doesn't seem reasonable to expect users to put this much effort into content filtering and it wouldn't help "shape" discussion culture, as the default (no filters?) would keep most users jumping from one "favorite game/band/movie/programming language" post to the next.

So far, it seems rules are set site-wide based on mostly removing blatantly off-topic, bad faith or trolling content. As the groups grow, however, I believe it's absolutely vital to also allow more subtle policies (think "only original sources for news articles" or "only direct links to movie trailers", etc). As groups branch off into further subgroups, it might suddenly also be reasonable to have very specific rules like "no more individual posts about hype topic X, keep discussion in the hub thread until Friday".

The only way I can see this work out (and maybe I lack imagination) is via a "meta" section for each group that allows whoever is decided to be part of the moderator group to decide upon and clearly formulate rules specific to it. It could be a wiki-like thing, it could involve voting on changes, maybe automation via "default tag filters", etc. Other users could see the policies mods have decided upon and maybe even "opt out" from moderation actions being considered in filtering, to have no reason to be paranoid about "censored" content.

Am I too pessimistic about tagging/voting solving this on its own? Am I too stuck on doing it "the reddit way" (albeit with hopefully better tools)? I just really believe it's subtle moderation like this that might make or break Tildes in the long run.

TL;DR: How would more subtle or group-specific moderation policies be decided? Just tags+votes? Should there be a "meta" sections for each group where mods can agree upon specific rules?

One thing I ended up realizing is that for e.g. code challenges in ~comp, there could be threads with a lot of code blocks that could easily take up a ton of screen real-estate. Something like the following isn't so bad:

/*
    This is a short multi-line example that doesn't
    take up much screen real-estate at all.
*/

But, what if the average comment for a particular topic has several of these with 100 lines or more? This could make navigating the comments really cumbersome as the number of comments grows. In the case of code challenges, lengthy code snippets could be very common, and collapsing the comment threads may not be the desirable course of action--in collapsing the thread for navigational convenience, you lose the ability to view and contribute to discussions. Hosting the code elsewhere risks links expiring or becoming lost or broken, and it feels like a clunky workaround to try to avoid inconveniencing other users.

With that in mind, what are your thoughts on having these code blocks display in a collapsed state by default with only a preview of the code block showing? Is there any support for this idea? If so, should this be implemented as part of Tildes itself or as a client-side extension of some sort? Are there any concerns about this?

(If there's general support for the idea, but opposition toward adding it to the Tildes code base, I may get off my lazy ass and try to hack something together.)

So I'm not really sure about this one. It's AMC.

I had read something about it several weeks ago, and I expected more. It's, apparently, the story of this overweight woman working as a writer for a fashion magazine. She's very dissatisfied with her appearance and doing whatever she can to lose weight. She seems more resigned than depressed.

It looks like the main topics are self deprecation, self empowering, fat shaming, the-beauty-inside and I guess feminism. There is a second plot regarding a mystery that will surely be developed in later episodes.

All in all, for a 2-episode premiere, I thought it was pretty slow and felt like not a lot happened. The characters were a bit flat and stereotypical for my taste and dialogues weren't brilliant. I think there were probably some good insights here and there, but nothing really engaging for me. There wasn't a lot of tension and I can't really point any algid moment. There was just a funny line I think, and the dramatic scenes were very soft key.

I might give the next episode a chance, but probably only when I have nothing else to watch.

I'd say 5/10.

Tags [noise, troll, flame, off-topic] got abused and used as an "I disagree" function. What if Tildes requires an explaination/argument for why the comment/post is either noise, off-topic, trolling/flaming. This way we can hold taggers responsible and accountable for the tags and to some degree see if the tag is reasonable or misused. All the reasons for the tags can be gathered on a "discussion" page for the thread, a bit like Wikipedia's talk pages for each entry.

If you've made it this far I'd love to hear your thoughs, reactions and critiques.
And for those who've made it this far: Enjoy this photogenic cat

Are users supposed to be able to continue to comment in topics that have been deleted? Once deleted, topics are no longer visible to the group, but the topic is still accessible by URL and users can continue to comment. I just want to clarify if this is the intended functionality or a bug.

Example: https://tildes.net/~test/280/deleted_topic