DavidSJ

44 ms·

481.
Illusions of Sound Perception(sethares.engr.wisc.edu)
76 points by DavidSJ 7y ago|20 comments
482.
by DavidSJ 7y ago
For present purposes the Newtonian approximation suffices, and in Newtonian gravity there are no black holes and no event horizons.
483.
by DavidSJ 7y ago
I was responding to a question about the difference between being on the ground and in the air, not one about the many other differences between this test and real-world operation.
484.
by DavidSJ 7y ago
One would presume this is purely a function of the pressure differential between the cabin and environment, which they presumably controlled for.
485.
by DavidSJ 7y ago
In this context, innocuous might mean something that would not have any meaningful chance of occurring in real-world operation, and should not have occurred during the stress test. So purely an artifact of the test, in other words.
486.
by DavidSJ 7y ago
They chose the option to have their voice chats transcribed by a machine. Not by a person.
487.
by DavidSJ 7y ago
Simply Difficult definitely maintains the wordplay. Simple and easy can be synonyms in some contexts, such as when contrasted with difficult.
488.
Gerry: A Font Created by Your Congressional Districts(uglygerry.com)
1 points by DavidSJ 7y ago|0 comments
489.
Autotomy(en.wikipedia.org)
2 points by DavidSJ 7y ago|0 comments
490.
by DavidSJ 7y ago
I doesn’t construct only primes. If p1, p2, ..., pn are prime, then p1p2...pn + 1 is not divisible by any of them, but it may not be prime itself.
491.
by DavidSJ 7y ago
Not all proofs are constructive. For example, Euclid’s classic proof that any finite set of primes is incomplete doesn’t actually tell you what the next one is.
492.
by DavidSJ 7y ago
You may be thinking of this experiment on ferrets: https://www.ncbi.nlm.nih.gov/m/pubmed/1527604/
493.
by DavidSJ 7y ago
So what happens if, by chance, a woman in your family marries someone of the same surname? Does the 表姐 label then not apply where it otherwise would?
494.
by DavidSJ 7y ago
Yes, so long as its mass distribution is spherically symmetric. The oblateness and other imperfections in the Earth do measurably affect satellite orbits, to the point where precision GPS navigation must incorporate corrections.
495.
by DavidSJ 7y ago
They are 3D Lissajous curves: https://en.wikipedia.org/wiki/Lissajous_curve
496.
by DavidSJ 7y ago
No, the L1, L2, and L3 points are like that — unstable equilibria. But the L4 and L5 points are stable.
497.
by DavidSJ 7y ago
At least in the idealized, restricted three-body problem — two large bodies in circular orbit plus a satellite of negligible mass — the Lagrange points are true points , but they represent not a destination for the satellite, but rather th
498.
by DavidSJ 7y ago
I read this book too and can also recommend it.
499.
The Seven Ways to Find Heading [pdf](navlab.net)
1 points by DavidSJ 7y ago|0 comments
500.
by DavidSJ 7y ago
It’s not a music streaming app. It’s a Bluetooth headphone management app.
501.
by DavidSJ 7y ago
I got 7/8 and I don't even listen to him.
502.
by DavidSJ 7y ago
I basically can't understand a thread on Twitter I don’t think Twitter understands threads on Twitter, and they never have. They built something over a decade ago, it took off for reasons they never fully could fathom, and they’ve be
503.
by DavidSJ 7y ago
Does anyone doubt it?
504.
by DavidSJ 7y ago
It looks almost like a bunch of trash was cleaned up off the streets.
505.
by DavidSJ 8y ago
The states' rights narrative isn't recent, but my understanding is that it's a very selective reading of history that ignores many of the stated rationales and events leading up to and throughout the war. Yes, war is complica
506.
by DavidSJ 8y ago
The key passage: Charts like these (including my own) that attempt to correlate valuation metrics with future returns start off at a significant unfair advantage relative to other types of correlation efforts. Note that a valuation metric
507.
by DavidSJ 8y ago
The author was not presenting it as a serious hypothesis. They were showing how compelling it looks at first glance, and how deceptive that naive analysis is, because of the unfair advantage the chart gets (in the sense that it inherently l
508.
by DavidSJ 8y ago
But the author’s point is it’s only predictive in hindsight, due to reversion to the mean of the past data (since investment allocation is basically just measuring price over the short run), not to some objective mean that also applies to
509.
by DavidSJ 8y ago
It’s a theorem, so it’s been proven: https://en.wikipedia.org/wiki/Universal_approximation_theore... Another caveat that I forgot in my previous comment is the domain has to be compact (closed and bounded). But if so,
510.
by DavidSJ 8y ago
Taylor series only approximate an (infinitely differentiable) function well locally, i.e. in some neighborhood of the approximation point. There are other methods applicable to less smooth functions and which approximate well uniformly (bou

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