grondilu

62 ms·

631.
by grondilu 10y ago
That looks like a sensible explanation, thanks. I guess I can put a ceiling on dt as a quick work-around.
632.
by grondilu 10y ago
I've also noticed that the simulation goes berserk, but only if you leave the page (I mean if you go to an other window or tab). I don't think it's due to Runge-Kutta but rather to the way HTML5/javascript behaves when
633.
by grondilu 10y ago
Indeed, (-1, 0) can not be reached. I'm thinking of ways to improve it that regard.
634.
by grondilu 10y ago
Context: I'm looking at Norman Wildberger's rational trigonometry[1], and here I was wondering how useful it is in physics. So I thought about testing it with the famous simple pendulum exercise. It's not obvious we get any
635.
Show HN: Simple pendulum simulation with rational trigonometry(grondilu.github.io)
52 points by grondilu 10y ago|28 comments
636.
by grondilu 10y ago
Is the industry winning the war against piracy? I know some people -cough- who told me -cough (damn what's wrong with my throat?)- that lately it's been extremely hard to find new stuff on bittorrent networks.
637.
by grondilu 10y ago
> In many places, homelessness, squatting, and camping without explicit permission are illegal. And in just as many places, if not many more, it's not. After all, shanty towns do exist.
638.
by grondilu 10y ago
> While raw "existence" is free, a sheltered existence is most certainly not. I was replying to "We have to pay to exist?", not "We have to pay for a shelter?". Being free to do something does not mean the m
639.
by grondilu 10y ago
> We have to pay to exist? No. Existing is free. You have to pay in order to live in a dwelling you could not afford.
640.
by grondilu 10y ago
Except this post was not about work but rather about everything else.
641.
by grondilu 10y ago
> In other words, we start to believe that we are not by default worthy of living a good, joyful, care-free, abundant life.. unless it is "deserved". It's not about being "deserved". There is no merit, morality
642.
by grondilu 10y ago
Sorry, that was removed once I had realized it was silly.
643.
by grondilu 10y ago
Some context : I was learning about rational trigonometry[1] and wanted to know if it can be used in computer graphics. I thought about John Carmack inventing his own square root function[2] because vector normalization is often needed and
644.
Exact rational value of a squared cosine between two arbitrary vectors(texpaste.com)
2 points by grondilu 10y ago|2 comments
645.
Show HN: Attempting to use Norman Wildberger's rational trigonometry in WebGL(grondilu.github.io)
8 points by grondilu 10y ago|0 comments
646.
by grondilu 10y ago
I'm slightly confused about how it's possible for a language to be written in itself. Say for instance you want to implement "printf". What's stopping you from just using printf?
647.
by grondilu 10y ago
> Lastly, are you concerned about the patent on the conformal method? I did not know it was patented. My module does not specifically implement the conformal method, though. I did create two nul vectors and I called them no and ni, as
648.
by grondilu 10y ago
> You have to be careful using other people's implementations, because certain operations are anticommutative, so sign conventions and operand ordering matters a lot more. For instance, choosing whether K is defined as e3 * e1 rathe
649.
by grondilu 10y ago
Say what you want about geometric algebra, if it has a least one merit, it's that it makes rotations in 3D space and their link with quaternions very simple to understand. Also check out my implementation in Perl 6: https://
650.
by grondilu 10y ago
Also Democritus: "By convention sweet is sweet, bitter is bitter, hot is hot, cold is cold, color is color; but in truth there are only atoms and the void." or: "We know nothing accurately in reality, but [only] as it changes
651.
by grondilu 10y ago
Can't help but think of Franz Reichelt: https://www.youtube.com/watch?v=FBN3xfGrx_U
652.
by grondilu 10y ago
My attempt at the Perl 6 version of the example: rx:i/^^ [ <+ alpha + digit + [._%+-] >+ ] ** 2 % '@' '.' <alpha>** 2..* $$/ Notice that this avoids the repetition of a patt
653.
by grondilu 10y ago
When Yan LeCun started playing with artificial neural networks, did he know why they worked? Aren't artificial neural networks very much inspired from nature anyway, not unlike early airplane wings? I mean between a cargo cult and
654.
by grondilu 10y ago
We don't need to fully understand a processus in order to reproduce it. We can proceed by imitation, trial and error. As we mostly did for airplanes, for instance. At some point we may create a machine exhibiting human-level intellig
655.
by grondilu 10y ago
Isn't this basically a computer science approach to Hamlet's monologue? If so, it's kind of cool.
656.
by grondilu 10y ago
The author gives an alternative characterization of death as a state with nul reward. I interpret this and other assertions in the article as the possibility that an AI system, even if it does not know about death, can chose complete inac
657.
by grondilu 10y ago
Isn't day trading a zero-sum game? If so, it's not very surprising that the majority of day traders lose money. Every dollar you make comes from someone who lost it. So unless you have a competitive advantage, such as lower bro
658.
by grondilu 10y ago
> Belief that existing laws in the US are pathetic and don't go nearly far enough. As you put it, it's a "Belief". I'd rather call it a point of view or even a political opinion.
659.
by grondilu 10y ago
> Secondly, I am a shareholder and I applaud this. I'm a shareholder as well. I'm willing to believe this decision was made for good reasons so I give the executives the benefit of the doubt, but to me it is slightly worryin
660.
by grondilu 10y ago
There are laws written to account for that. This article suggests that NVIDIA went beyond the existing laws. What exactly can justify this?

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