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Syntonicles commented on Are you stuck in movie logic?   usefulfictions.substack.c... · Posted by u/eatitraw
karmakaze · a month ago
I'd like this to be a Reddit post, and people reply with their successes and failures using the method(s).

Might sound simple in theory, reality might get messy.

Syntonicles · a month ago
I feel this inner conflict of yours could be resolved by posting to Reddit and asking for anecdotes.
Syntonicles commented on The shadows lurking in the equations   gods.art/articles/equatio... · Posted by u/calebm
baruchel · a month ago
Shameless plug: eight years ago, I created the following website for posting plots of complex functions using similar gradients: https://kettenreihen.wordpress.com/
Syntonicles · a month ago
Those are really cool to look at. I kept trying to click them to learn more, I wish some of them were mini blog posts to give a little bit of grounding.
Syntonicles commented on Tinkering is a way to acquire good taste   seated.ro/blog/tinkering-... · Posted by u/jxmorris12
andy99 · 2 months ago
I’m in my mid 40’s, and have been using computers since the mid ‘80s. What generation are you from?
Syntonicles · 2 months ago
Yours. I can't explain your frustration then, or why the author's intent escaped you. If you use Firefox there's a little reader-mode icon in the address bar you may find convenient.
Syntonicles commented on Tinkering is a way to acquire good taste   seated.ro/blog/tinkering-... · Posted by u/jxmorris12
andy99 · 2 months ago
I’d like to tinker with that font, it burns my eyes to try and read the words styled like that, maybe that’s the intent?
Syntonicles · 2 months ago
It sent me back in time, very nostalgic. I even took a few minutes to sit and enjoy the moment and remember what it was like to explore the internet on a pixelated CRT in the 90s.

I suspect it's a generational gap.

Syntonicles commented on Mathematicians have found a hidden 'reset button' for undoing rotation   newscientist.com/article/... · Posted by u/mikhael
AugusteDupin · 2 months ago
As meindnoch points out, the connection needs to loop over the rotating object. That is no problem if the only affect of the rotation that interests you is the centrifugal force.

When you give plasma (not whole blood) the nurses use a centrifuge machine that seems impossible: one tube goes from you to it (carrying whole blood), another tube goes from it back to you (carrying plasma depleted blood). The mechanism of Dale. A. Adams keeps the tubes from twisting. Search “antitwister mechanism patent” for a drawing of the mechanism. As for the principle behind the mechanism, see http://Antitwister.ariwatch.com for a PC program where you can adjust every variable imaginable.

Syntonicles · 2 months ago
What a fascinating project. It looks a real labor of love, and I wish I understood it more deeply. I've been making my own visualization sandboxes like this to explore configuration spaces and groups - but for much simpler, more intuitive physical systems.

I went down a few rabbit holes on the site - is this program also written in Basic?

Syntonicles commented on Mathematicians have found a hidden 'reset button' for undoing rotation   newscientist.com/article/... · Posted by u/mikhael
SyzygyRhythm · 2 months ago
This is important. The mechanism doesn't really work the way you want most of the time. I occasionally see a claim that you can power a carousel with this method, but it doesn't work. You would have to have the cable go out and around the carousel structure, and then into the top. And the cable would still move relative to the ground and the carousel.

You could, in principle, have a totally internal system, but with arms that grab and release the cable at intervals so that the looped portion can pass by them. You could arrange the timing so that electrical contact is never lost. But you are still making/breaking contact and it starts to lose some apparent advantages compared to a slip ring.

That's not to say it isn't still useful for some purposes, like maybe a radio antenna that isn't too impacted by a cable moving in front on occasion. But it doesn't eliminate all uses for a slip ring.

Syntonicles · 2 months ago
I can't go into detail, but that's essentially my use case. I have a geodesic dome with a cable running up externally, and would like to run it through a hollow shaft coming in through the top which rotates like a carousel. I'm fairly certain this is precisely what I need.
Syntonicles commented on Mathematicians have found a hidden 'reset button' for undoing rotation   newscientist.com/article/... · Posted by u/mikhael
v7n · 2 months ago
I was immediately reminded of the anti-twist mechanism, perhaps unrelated but "reset rotation, twice/half" comes up there as well.

https://en.wikipedia.org/wiki/Anti-twister_mechanism

Syntonicles · 2 months ago
What?!

Thank you! I'm working on a robot with a very expensive slip ring, and need to send high fidelity data through it with shielding. I had no idea this was possible this will make things so much easier!

I found a related video you might find interesting.

https://www.youtube.com/watch?v=gZvimEf6DFw

I'm currently studying group theory and SO3 rotations (quaternions & matrix groups) and I'm also curious about the connection. I still have a lot to learn but I wouldn't be surprised if the reset rotation is unique, if we abstract away variation.

Syntonicles commented on IDEs we had 30 years ago and lost (2023)   blogsystem5.substack.com/... · Posted by u/AlexeyBrin
bowsamic · 2 months ago
Mainly random lisp errors being thrown in certain cases, likely just unimplemented functionality, I didn't record them since there are so many. I probably see one every other day but usually it's somewhat outside of the normal operation of magit. It still feels like a bug though, and very likely is.

I mean, magit is not some perfect piece of software. Of course it has bugs, I just hit them quite a lot. The slowness is more annoying though. Sometimes it takes seconds to open magit after hitting C-x g

I've also had magit get stuck in a 100% CPU usage loop a couple times

Syntonicles · 2 months ago
That sounds frustrating! It hasn't been my experience at all.

I'm an enthusiast when it comes to [Vanilla] Emacs. I enjoy customizing my editor, jumping into the Lisp when I find an error, and contributing - though my own config is usually the problem.

This sounds like an opportunity to improve the day-to-day for developers!

Please report any verified bugs to Github. There are only 12 open issues, most of them enhancement requests. The maintainers are celebrated in the community for their diligence and attentive engagement, and I'm sure they'd love to help.

Syntonicles commented on IDEs we had 30 years ago and lost (2023)   blogsystem5.substack.com/... · Posted by u/AlexeyBrin
bowsamic · 2 months ago
Magit is really great, however, it can definitely be quite slow and buggy sometimes
Syntonicles · 2 months ago
I've been using Magit for years, and have never noticed any bugs.

The interface is unique and takes a lot of getting used to. I did need to leverage my extensive experience with Git and Emacs to understand unexpected behaviour but the fault always lay with me.

Given the implications of bugs in such a critical part of a developer's workflow, can you be more specific?

Syntonicles commented on An illustrated introduction to linear algebra   ducktyped.org/p/an-illust... · Posted by u/egonschiele
egonschiele · 2 months ago
Author here – I think you're probably right. I wrote the Gaussian elimination section more as a recap, because I figured most readers have seen Gaussian elimination before, and I was keen to get to the rest of it. I'd love to hear if other folks had trouble with this section. Maybe I need to slow it down and explain it better.
Syntonicles · 2 months ago
Loved the article, and also the shoutout to Strang's lectures.

I agree with the order, the Gaussian should come later I almost closed the article - glad I kept scrolling out of curiosity.

Also I felt like I had been primed to think about nickles and pennies as variables rather than coefficients due to the color scheme, so when I got to the food section I naturally expected to see the column picture first.

When I encountered the carb/protein matrix instead, I perceived it in the form:

[A][x], where the x is [milk bread].T

so I naturally perceived the matrix as a transformation and saw the food items as variables about to be "passed through" the matrix.

But another part of my brain immediately recognized the matrix as a dataset of feature vectors, [[milk].T [bread].T], yearning for y = f(W @ x).

I was never able to resolve this tension in my mind...

u/Syntonicles

KarmaCake day177November 14, 2019View Original