gjm11

81 ms·

781.
by gjm11 5y ago
Sure, "5D" _could_ make sense. It just happens not to in this case. They're mixing up two different sorts of dimensionality that it doesn't make any sense to mix up. 1. How many parameters does it take to describe where
782.
by gjm11 5y ago
In case anyone is wondering what they mean by "5D": they mean it's a 3D array of marks, each of which has both size and orientation. The 3D array is three 2D layers. According to this definition, a DVD or Blu-Ray disc is &quo
783.
by gjm11 5y ago
Toy model: There are 10 goods you buy. They're reasonably substitutable for one another (maybe they're different foods, or types of computer game, or something). Every year one of these increases in price by 20%. A different one
784.
by gjm11 5y ago
Version III. (0:20..0:25.)
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by gjm11 5y ago
> The m1 max TDP is projected to be 90W. The Xeon is 45W. That article says that the M1 Max CPU TDP will be ~30W. The 90W figure is for the whole chip, which includes the GPU . The Xeon is just the CPU. > here's that Xeon beat
786.
by gjm11 5y ago
On the US conviction rate: page 8 of https://www.justice.gov/sites/default/files/usao/legacy/2013... says "Of the 87,709 defendants terminated during Fiscal Year 2012, 80,963, or 93 percent, ei
787.
by gjm11 5y ago
I think almost everything you say about Japan is wrong. "99.9% of people accused of a crime ..." -- this is a reference to the fact that the Japanese criminal system's conviction rate is a startlingly high 99.9%. But what&#x2
788.
by gjm11 5y ago
Every one of the three points I mentioned is a thing that has not, in fact, already happened. The vehicles are still more expensive than otherwise similar electric vehicles, and hydrogen is still more expensive than equivalent quantities of
789.
by gjm11 5y ago
So far as I can see, literally nothing in your reply has anything to do with hydrogen fuel cells. You could say all the exact same things if what you were proposing was little nuclear reactors in cars, or storing energy in very heavy flywhe
790.
by gjm11 5y ago
You have made this and similar claims over and over again on HN, but you seem much more interested in making such claims than in supporting them, and your response when challenged has mostly been just to reiterate your statements that h
791.
by gjm11 5y ago
Nice catch on using enormous values of y, where indeed it isn't just denormal values of x that cause trouble. Still not a catastrophic-cancellation problem, though. Let's look more closely. Suppose x is very very close to 0. (In p
792.
by gjm11 5y ago
There are advantages to using either version of the formula. If you use the "first" then you do need to take care about overflow/underflow when the number of interpolation points is large, but that isn't an issue here. T
793.
by gjm11 5y ago
Hm, interesting. I also tried some numerical experiments to sanity-check and I got reasonable results right up to 1ulp away from the interpolation points. I tried again using exactly your example -- f(x) = 10+10x, interpolation points at 0
794.
by gjm11 5y ago
It's worth being a bit more explicit about this. The appearance of NaNs doesn't result from breaking the "never test for equality" rule. It happens when the point where you're evaluating the function just happens t
795.
by gjm11 5y ago
No, it's flatly false unless "region" is being used in a highly misleading way. There are about 2500 people living right now in the town of Okuma where the Fukushima Daiichi reactor was located. https://en.wikipedi
796.
by gjm11 5y ago
The actual title of the paper is "How ISO C became unusable for operating systems development". Is there a particular reason why the first and last words have been removed here?
797.
by gjm11 5y ago
There's at least the following relationship: both the Brouwer fixed-point theorem and the hairy ball theorem are easy consequences of a more-highbrow thing called the Lefschetz fixed-point theorem. Unfortunately even the statement of t
798.
by gjm11 5y ago
Having a sense of humour is not frowned upon here. Posting low-effort cookie-cutter jokes is frowned upon here, because (1) they usually aren't actually very funny and (2) empirically it seems that communities where that sort of joki
799.
by gjm11 5y ago
I have to say that my immediate interpretation of the title is: "Goldman Sachs: We've bought some oil futures".
800.
by gjm11 5y ago
My main reason is the same as mindcrime's and daggersandcars's: I found that every now and then I'd buy books I'd forgotten I already had, and it was annoying. At one point I thought there would be value in recording whe
801.
by gjm11 5y ago
I'm not OP, but I also have thousands of books (a little over 4100 at last count), so I guess my answers might be of interest. 1. I'm about 50 years old. (The furthest back my records go is 2004, when I was about 35 and the count
802.
by gjm11 5y ago
"Atlas Shrugged" is a polarizing book: people tend to either love it or hate it. And the people who love it love to tell other people how great it is, whereas many of the people who hate it just don't talk about it (because t
803.
by gjm11 5y ago
Most likely the main reason "A Pattern Language" is popular here on HN is that it spawned a movement in software engineering: https://en.wikipedia.org/wiki/Software_design_pattern (Plus the fact that it'
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by gjm11 5y ago
Contrary to the last line, this seems to me very different from "for Python what TypeScript made for Javascript". Typescript is an extension of Javascript; any legal Javascript program is a legal Typescript program; Typescript a
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by gjm11 5y ago
The argument discussed here was first published by Lucas in 1961 ("Minds, Machines and Goedel"). What seems to me a conclusive refutation of it was published by Hilary Putnam in 1960 ("Minds and Machines"). Putnam's
806.
by gjm11 5y ago
ESA's own website doesn't mention any such thing as of 2021-09-18: https://www.esa.int/Science_Exploration/Space_Science/Webb/ "Launch date: 18 December 2021" This seems like the sort of t
807.
by gjm11 5y ago
I tried a few searches. <<javascript pipe syntax>>: none of the search results appeared to have anything to do with Javascript pipe syntax. (Which doesn't exist yet, but it's under discussion.) Google gives a bunch of
808.
by gjm11 5y ago
Yup. I don't think the similarity is because I'm copying Knuth (I certainly wasn't deliberately doing so); this is a very well known argument and there isn't all that much scope for presenting it very differently. (Odd
809.
by gjm11 5y ago
Just for fun, an example of an application of partial fraction decomposition that doesn't involve taking integrals. Consider the Fibonacci numbers 0, 1, 1, 2, 3, 5, 8, ... (with the convention that 0 and 1 are the 0th and 1st). Here&
810.
by gjm11 5y ago
Despite the name "Cryo Cooler", this particular configuration doesn't use liquid nitrogen or anything of the sort. It's ordinary water-cooling plus a Peltier-effect thermoelectric device.

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