Adarain's recent activity
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Comment on What have you been watching / reading this week? (Anime/Manga) in ~anime
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Comment on Could a space traveler accelerate at 1g forever? in ~space
Adarain Link ParentOnce you get to relativistic speeds, the phrase "constant acceleration" cannot be defined as a constant change in outside observer velocity anymore, since as you mention, that will eventually lead...Once you get to relativistic speeds, the phrase "constant acceleration" cannot be defined as a constant change in outside observer velocity anymore, since as you mention, that will eventually lead to going faster than c. The more accurate phrasing would be "constant force", with the relationship between force and change of velocity becoming increasingly less newtonian as you get closer to c.
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Comment on Could a space traveler accelerate at 1g forever? in ~space
Adarain (edited )Link ParentI should be clear here that when I say outrun, I do not mean overtake (which is, I believe, indeed impossible) but manage to maintain an ever-shrinking but always positive lead. I cannot perform...I don't see how that squares with anything I know about relativity. You have some extraordinary explaining to do if you want to maintain this claim. If you're slower than c, then by definition you do not outrun light.
I should be clear here that when I say outrun, I do not mean overtake (which is, I believe, indeed impossible) but manage to maintain an ever-shrinking but always positive lead. I cannot perform the math for you anymore, but I remember what the spacetime diagram looks like: Light forms its usual light cone, going up at a 45 degree angle. The world-line of the accelerating spaceship has the shape of a hyperbola with asymptote said 45 degree line. This hyperbola manages to always stay outside the light cone while never actually going faster than c (its tangents are never flatter than 45 degrees).
Edit: Also, I think I should try to be clearer on the original statement: What I had calculated back then, I'm pretty sure, was that if you kept accelerating, you could get to the edge of what is now the observable universe within a human lifetime. I then also found a larger number somewhere that took into account how far you can actually get (in today distance) when accounting for the accelerating expansion of the universe - I don't remember if I was able to verify that number myself though. I just remember that it's somewhat larger than the current radius of the observable universe. I hope this clarification makes it clear I'm not really trying to make all that extraordinary a claim.
I'm really not sure if you can ever truly leave the observable universe in the sense that eventually, no light from you will ever make it back to earth, but I feel like it should be possible?
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Comment on Could a space traveler accelerate at 1g forever? in ~space
Adarain Link ParentIt doesn't. The observable universe is everywhere from where light could have gotten to us in the time between the beginning of the universe (ignoring the very very beginning) and now. I am...It doesn't. The observable universe is everywhere from where light could have gotten to us in the time between the beginning of the universe (ignoring the very very beginning) and now. I am talking about the observable universe centered on Earth, mind. The spaceship is of course always in its own observable universe.
Also, you argue that by the time we get there, light must have gotten back from there to earth, so the observable universe has grown to include that location in the meantime. However, unintuitively you can outrun light indefinitely while moving slower than c as long as you keep accelerating, so I believe even that's not necessarily true!
Also, perhaps more relevantly, once you're far enough away from earth, the expansion of the universe is going to make your distance to earth grow faster than light as well.
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Comment on Could a space traveler accelerate at 1g forever? in ~space
Adarain Link ParentIt should be noted that this number blows up a lot as you go on for longer. I ran the numbers once when General Relativity was still fresh 8n my mind and concluded that if you did constant forward...It should be noted that this number blows up a lot as you go on for longer. I ran the numbers once when General Relativity was still fresh 8n my mind and concluded that if you did constant forward acceleration of 1g for just a few years shiptime you can get to other galaxies, and you can actually get outside of what is the to us observable universe this way, within a human lifetime (but afaik you still hit a limit eventually as the expansion of the universe eventually out-accelerates you). Of course the drawback is that millions of years pass outside the ship...
Sadly at this point it's been a few years and I can't show my work anymore. But the takeaway is that constant acceleration is very strong compared to just going fast.
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Comment on Special announcement about “Hollow Knight: Silksong” soon in ~games
Adarain (edited )LinkWell, there we have it: Releases September 4th Also, interview with team cherry about why it took so long (gift link, not me): https://bsky.app/profile/jasonschreier.bsky.social/post/3lww5zc46522yWell, there we have it: Releases September 4th
Also, interview with team cherry about why it took so long (gift link, not me): https://bsky.app/profile/jasonschreier.bsky.social/post/3lww5zc46522y
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Comment on Jet Lag: Snake across South Korea | Trailer in ~hobbies
Adarain Link ParentEp 6 I actually had the opposite thought - what if they were allowed to split up? Both blockers take half the deck, can travel independently, can communicate, and can swap cards when they meet up...Ep 6
I actually had the opposite thought - what if they were allowed to split up? Both blockers take half the deck, can travel independently, can communicate, and can swap cards when they meet up in the same station. This would make it much harder for the snaker to slip away and get ahead of them, forcing more minigames and winding paths that have a genuine chance of crashing.
Also, I think this would be the perfect game to play on a smaller scale - a city metro / tram / bus network or so.
All in all, interesting concept but definitely ranks lowly on my Jet Lag Tierlist. Hope they iterate on it, though!
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Comment on Tips for starting a garden? in ~hobbies
Adarain Link ParentI was about to bookmark that site for future use, but then I noticed they only have info on a few select countries, and no way of figuring out if any of that info could be useful to me. I guess if...I was about to bookmark that site for future use, but then I noticed they only have info on a few select countries, and no way of figuring out if any of that info could be useful to me. I guess if and when I have the possibility of planting stuff, I'll just have to ask my mom for advice 😅
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Comment on Switch 2 - My thoughts (preview event recap) in ~games
Adarain Link ParentWill I be able to transfer some of my stuff? Some games and saves on the old one are my brother's (he doesn't have a credit card so everything went through my account).When you set up the new one, you'll be able to transfer all of your stuff over and erase the old one.
Will I be able to transfer some of my stuff? Some games and saves on the old one are my brother's (he doesn't have a credit card so everything went through my account).
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Comment on Switch 2 - My thoughts (preview event recap) in ~games
Adarain Link ParentThe reason I'm interested in buying the switch 2 is essentially that I have a switch, but I'm sharing it with my younger brother, who has also spent quite a bit of money on games and peripherals...The reason I'm interested in buying the switch 2 is essentially that I have a switch, but I'm sharing it with my younger brother, who has also spent quite a bit of money on games and peripherals himself. Currently it's in my family's living room, and I don't really want to take it away from there, but it's impractical for me. As I'm the one with actual income here, it makes sense that I'd buy myself a new one and give him the old one to keep. I am interested in some of the new games as well, but I want to keep my existing ones. Ideally I'd like to transfer only some of them and leave him the rest but I assume that won't be possible except with physical cartridges?
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Comment on Switch 2 - My thoughts (preview event recap) in ~games
Adarain LinkI've been considering getting a switch 2 and leaving my original one to my brother. How does this work with games I've bought for the switch? Would I have to rebuy them all, or can they be played...I've been considering getting a switch 2 and leaving my original one to my brother. How does this work with games I've bought for the switch? Would I have to rebuy them all, or can they be played on the new device? (most are digital, but one or two are physical)
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Comment on We played Jetlag Hide&Seek and it went well in ~hobbies
Adarain LinkA friend of mine has ordered the thing, and I'm really excited to try it, but I'm actually wondering about one thing: What were you using to share/track location? Also, how long did it take you?...A friend of mine has ordered the thing, and I'm really excited to try it, but I'm actually wondering about one thing: What were you using to share/track location? Also, how long did it take you? We're planning on playing in Zürich, which is obviously quite a bit smaller, but the game seems to be able to go really long from what I've seen so far
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Comment on Jet Lag: Hide + Seek Japan | Trailer in ~hobbies
Adarain Link ParentThanks for the message, I saw it and a friend is getting it :DThanks for the message, I saw it and a friend is getting it :D
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Comment on Jet Lag: Schengen Showdown | Trailer in ~hobbies
Adarain LinkEpisode 6 I do wonder... could Sam and Tom not have gotten to Talinn through Latvia on a train or long distance bus? That would have gotten them two more countries and a shot at executing some...Episode 6
I do wonder... could Sam and Tom not have gotten to Talinn through Latvia on a train or long distance bus? That would have gotten them two more countries and a shot at executing some hail mary plan on the last day. But I don't know how well connected the baltics are, perhaps there simply was nothing?
The final challenge was really nice though. I kinda wanna do that with someone now. Really pretty spot too
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Comment on How do you feel about your PTO? in ~life
Adarain Link(Europe) Well, I’m a teacher, so I don’t get any, but have a lot of holidays and don’t actually have to go to work every day of the week either. Calling in sick is a non-issue, but I should...(Europe) Well, I’m a teacher, so I don’t get any, but have a lot of holidays and don’t actually have to go to work every day of the week either. Calling in sick is a non-issue, but I should provide tasks for my students while I’m off. It’s nice.
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Comment on An appeal to the community for non-algorithmic recommendations in ~talk
Adarain Link ParentFunny you say that, since the spacetime in that book is euclidean (unlike our own, which is only pseudo-euclidean – the time direction behaves differently from the space ones in our world)...I am hooked with this. I've said it a handful of times, but I am an absolute sucker for non-Euclidean space
Funny you say that, since the spacetime in that book is euclidean (unlike our own, which is only pseudo-euclidean – the time direction behaves differently from the space ones in our world)
(ignoring the effects gravity has on spacetime here, i.e. only special relativity. Swap out “euclidean” for “riemannian” in the general case)
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Comment on Jet Lag: Schengen Showdown | Trailer in ~hobbies
Adarain Link ParentThanks for that description, that is very clear now and definitely not the impression I got from watching the episode.Thanks for that description, that is very clear now and definitely not the impression I got from watching the episode.
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Comment on Jet Lag: Schengen Showdown | Trailer in ~hobbies
Adarain Link ParentEpisode 1 spoilers In that case I'm baffled why they didn't continue to Aachen. It would've been a very close race since they both got to Germany around the same time; I think Sam&Tom could've...Episode 1 spoilers
In that case I'm baffled why they didn't continue to Aachen. It would've been a very close race since they both got to Germany around the same time; I think Sam&Tom could've even started a challenge first, and locking the netherlands didn't seem like a high priority at the moment anyway, as this early on, just grabbing as many countries as possible has got to be ideal, and they wanted to go to Germany anyway to fly to Vienna
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Comment on Jet Lag: Schengen Showdown | Trailer in ~hobbies
Adarain Link ParentSo to make sure I got this right, let’s do a fictional example: Start of the game, the country is unclaimed. Team A sets foot in it and claims it, giving them a tentative +1 point. Now I can think...So to make sure I got this right, let’s do a fictional example:
Start of the game, the country is unclaimed. Team A sets foot in it and claims it, giving them a tentative +1 point. Now I can think of several scenarios:
- Team A does not attempt the challenge and moves on. Later, team B also travels through the country. They do not automatically claim it for themselves, but they may attempt the challenge. If they succeed, they flip and lock the country. If they fail, team A has the country guaranteed.
- Team A attempts the challenge, either immediately or at some later point. If they succeed, the country is locked and no one can steal it anymore. If they fail, it’s like in the first situation, except they no longer have the option to try the challenge anymore.
Then there are some edge cases, notably, how does it work when both are in the country at the same time? Can they race to do the challenge and whoever gets it first gets the country? Or does one team get to try first uncontested, and if so, is it the one who first claimed it, or the one who first opened the envelope?
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Comment on Jet Lag: Schengen Showdown | Trailer in ~hobbies
Adarain Link ParentThat doesn't sound right. I saw an interview where they mentioned that if someone just tried to travel quickly across many countries, the other team could just tail them and flip everything right...That doesn't sound right. I saw an interview where they mentioned that if someone just tried to travel quickly across many countries, the other team could just tail them and flip everything right back.
It did sound like that perhaps once you've tried (and failed) the challenge it becomes like that? Time will surely tell but as pretty much every time I wished they gave just a bit clearer rule explanations, I always feel like I can't properly follow along with their strategizing as I don't understand the rules well enough...
In terms of anime, I'm actively following DanDaDan, Witch Watch and CITY: The Animation (though the latter I'm watching with a friend and we've fallen behind a few episodes). All are really fun in their own ways.
I'm also reading One Piece. I've long since given up on reading it in Japanese, the classical language in Skypiea broke me and I just got frustrated at how slow reading was. I'm now somewhere in the early 600s, so in the middle of
OP Arc
Fishman IslandThe last few arcs were all amazing, and I'm very excited to see where things go from here. Apart from a few arc names I know nothing of what's coming in the future, the only big OP spoiler I knew ahead of time was a certain event in the previous arc.