Today's problem description: https://adventofcode.com/2021/day/10

Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

<details>
<summary>Part 1</summary>

```python
Your code here.
```

</details>

This thread is posted weekly - please try to post all relevant US political content in here, such as news, updates, opinion articles, etc. Extremely significant events may warrant a separate topic, but almost all should be posted in here.

This is an inherently political thread; please try to avoid antagonistic arguments and bickering matches. Comment threads that devolve into unproductive arguments may be removed so that the overall topic is able to continue.

Today's problem description: https://adventofcode.com/2021/day/9

Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

<details>
<summary>Part 1</summary>

```python
Your code here.
```

</details>

What are some VR games where the person in the headset can cast to a TV and the people watching can still participate/have fun?

For example, at a get-together over the summer, my friends and I played a hot seat version of I Expect You to Die 2. The person in the headset played the single-player game themselves, but everyone in the audience was able to watch the cast on the TV and help that person by giving them recommendations to try different things and help them solve the puzzles (or just recommend ridiculous stuff to see if the game will allow it). Even though the game is single-player, it worked really well as a communal experience and was a ton of fun for the whole room.

Any other recommendations for games like this we can try?

Note: we've already played Keep Talking and Nobody Explodes
Target Hardware: Oculus Quest 1

What have you been listening to this week? You don't need to do a 6000 word review if you don't want to, but please write something! If you've just picked up some music, please update on that as well, we'd love to see your hauls :)

Feel free to give recs or discuss anything about each others' listening habits.

You can make a chart if you use last.fm:

http://www.tapmusic.net/lastfm/

Remember that linking directly to your image will update with your future listening, make sure to reupload to somewhere like imgur if you'd like it to remain what you have at the time of posting.

Today's problem description: https://adventofcode.com/2021/day/8

Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

<details>
<summary>Part 1</summary>

```python
Your code here.
```

</details>

Today's problem description: https://adventofcode.com/2021/day/7

Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

<details>
<summary>Part 1</summary>

```python
Your code here.
```

</details>

Hey all. I just bought my first mountain bike. I don't know much about mountain biking but when I've taken a hybrid out onto logging trails it's been super fun so I'm sure I'll enjoy it. I have a few questions before I head out into the mountains:

1. What kind of mountain-biking specific gear do I need?
2. Where should I go as a beginner? Ideally somewhere with not too many hikers or other cyclists. I have plenty of stamina from my regular uphill cycling routine, but I don't want to get into intense steep riding and jumps right now.

Hi folks. I'm posting this in ~creative because I want to see what other artists think of it; the technical side is important too, but artists and art are the focus of this project.

Cryptographic Digital Art Tokens are a concept I've been working on for a while, to provide some of the benefits of crypto tokens without perpetuating the harm they create.

CDATs are not NFTs. They are not designed to facilitate investment, but rather collection. They do not use a blockchain and do not rely on distributed consensus at all. Instead, they use traditional cryptography to validate the ownership of art.

How CDATs Work

Let's say an artist Adam creates a piece of art called One. He decides he wants to sell a CDAT of One, so he creates a CDAT key and publishes his public key on his website, adam.art.

A collector, Beth, decides she wants to buy One. She e-mails Adam and they agree on a price, and exchange keys; once she has paid, Adam sends Beth a CDAT, which he has signed. Beth then cross-signs the CDAT and sends it back to Adam. It ends up looking like this:

=== CDAT DATA ===
Artist: Adam <adam@adam.art>
Collector: Beth <beth@betawork.codes>
Date of Sale: 2021-12-08T19:50:56Z
Title: One, a Digital Story
Work ID: art.adam.one
Cover Hash: e82c294938320bf4fab56970f52e1ddf
Work Hash: 3179c999f1d4fab4bcc8a57bca1c9d8c
Artist Key Fingerprint: c634d0420f825b91
Collector Key Fingerprint: 3b2e3bbf91ec96c2
=== CDAT SIGN ===
Artist Signature: YTtsc2tkamY7bHNramY7bGtqZDtsa2pmYTtsZGt...
Collector Signature: cXdpZXVwcXdpeXR1djtsbmFvdWNuZWN2cHdl...
=== CDAT META ===
Cover URL: https://adam.art/images/one-cover.jpg
Work URL: https://adam.art/art/one.zip
Artist Key URL: https://adam.art/static/cdat.key
Collector Key URL: https://betawork.codes/
=== CDAT OVER ===

In an ideal world, with all the software enablement I want to do, Beth would be able to take this token and put it in a digital gallery or on her website, where the art piece, and her ownership of it, would be proudly displayed for all to see in a user-friendly, beautiful format.

Structure

The CDAT has three sections - DATA, which is signed, META, which is not, and SIGN, which contains the CDAT's cryptographic signatures. Hashes and key fingerprints are in the DATA section, but URLs are in the META section, which means they can be changed later; artists and collectors can re-host their art and keys, so long as the files' hashes or fingerprints remain exactly the same.

Semantics

Because the CDAT is cross-signed, anyone can see that both Adam and Beth have agreed to the sale. Assuming the signatures and keys all check out, Beth can now prove to people that Adam sold her his art, and Adam can prove that Beth bought it.

Implementation

In order for this interaction to work, we technically need only existing technology: you can validate such things with GPG and some manual reordering. Ideally, though, we'd have a few tools:

• A CDAT validation program. This should include a command line program and a GUI (maybe even a mobile app?), and would validate the following information:
  • The given signatures are valid and correct for the given CDAT.
  • The keys used to sign the CDAT match both the given fingerprints and identities.
  • The linked key URLs, if any, in fact point to the indicated keys.
  • The linked art and cover URLs, if any, in fact point to files with the given hashes.
• A CDAT creation program. This should include a command line program and a GUI. It would take as input the relevant keys and names, provide a way to set the date, and ensure that everything relevant is online at the given URLs.
  • This program would be used by both artists (to create CDATs) and collectors (to cross-sign CDATs).
• A CDAT hosting service. Obviously there could be more than one of these, and people could host their CDATs and art on their own machines - that's decentralization, baby! - but it would be very nice to be able to host CDATs, art, and keys for free or a nominal fee.

This would be a great start, but in order to really kick-start the ecosystem, it would be nice to provide some additional enablement software, such as:

• A drop-in HTML embed that uses client-side JavaScript to display and validate CDATs on a website.
• A browser extension which validates CDATs found on arbitrary websites, on the user's request.
• A self-hostable CDAT gallery for artists and collectors which displays who owns what, and which art pieces are still for sale.

Please let me know if this idea is interesting to you, and ask any questions/leave comments!

okay tildes here to tell suspended to leave their kid alone about discord on the school computer. that was easy advice to give! But how about a real challenge in what-should-i-do-about-the-boy? hold onto your HATS bc I've got a TOUGHIE~!

see I was tutoring this 13yo last year. He was super isolated and he still is. He deals with a range of insecurity and frustration. He leaps to conclusions and struggles with anger at the people around him, especially his mother. I used to spend time with him daily, but then I moved towns and now our contact is limited to chat and video call. We talk throughout the week but we always video call on wednesdays. His mother asked me if we could switch days, because she wants him to go to after school sessions with a math teacher who has noticed his grades falling. When I talked to him about the possibility of swapping so he could attend the afterschool, he told me that he didn't want go to sessions for dumb kids. I said I was flexible regardless so he can't use the time I reserve for him as an excuse not to go -- but I worry that his perception that the sessions are for dumb kids reflects a stigma that will prevent him from asking for help when he needs it.

How do I push back on the idea that getting extra help with school could imply that he is somehow inexcusably deficient? I sense that most of his other teachers are setting the bar even lower for him than they did last year; his take-home assignments are uniformly inane, and he knows it. How would you communicate around why it is important to try and to practice trying when so much of what is expected of him is transparently pointless? My friendship with him has become important, I think, but I worry a lot that I have no chance to guide him toward a better life and this episode has been a keen example.

This topic is part of a series. It is meant to be a place for users to discuss creative projects they have been working on.

Projects can be personal, professional, physical, digital, or even just ideas.

If you have any creative projects that you have been working on or want to eventually work on, this is a place for discussing those.