Viewing profile — pfedak

I believe they are mixing it up with The Guns of August (published in 1962, also by Tuchman), which JFK was fond of and supposedly drew on during the Cuban missile crisis.

This is nonsense, at least in part because it's mixing two different ideas. The notion that the image "looks exactly the same as how it originally appeared" is only true when one o…

Another aspect of the solution that makes it rather abstract is it effectively assumes we know nothing about the distribution of the number of days. Paying at 1/2 will be optimal i…

If it wasn't clear, their statements are all true when the events follow a poisson distribution/have exponentially distributed waiting times.

The main image is all at the same 90x level, and those buttons just zoom in (more or less) all the way on the points, while the "140x" are separate scan patches at higher magnifica…

https://tmbw.net/wiki/Shows/1992-07-23 sounds like the concert in question

That isn't at all what the central limit theorem says. The whole point is it holds independent of the actual shape of distribution of the population. You could use the same argumen…

The nice thing about deciding on a distance metric is that it gives you both a path (geodesics) and the speed, and if you trust your distance metric it should be perceptually const…

Actually playing around with it the behavior was very different from what I expected - there was much more zooming. Turns out I missed some parts of the zoom code: Their zoom actua…

I think you can reasonably think about the flight path by modeling the movement on the hyperbolic upper half plane (x would be the position along the linear path between endpoints,…

the chart in the streetsblog article puts some values in the wrong boxes, too. pathetic

you're reading the table correctly but it's been reproduced incorrectly and had its title removed from the original source https://www.iihs.org/news/detail/high-visibility-clothing…

You're misreading the solution, the first part reads n=1, a trivial special case, not n congruent to 1 mod 4. The statement doesn't hold for e.g. n=5. Taking m=2 gives the permutat…

Wikipedia (citing a book on archive.org but no page number) [1] claims the largest order of an element of the Rubik's cube group is only 1260, so the simple repetition strategy wou…

This looks like the relevant fix: https://github.com/lichess-org/scalachess/pull/154 (the broken code checked that the only pieces on the king's path to its new position were kings…

The example is poorly chosen in terms of practicality for this reason, but otherwise, no, this is a poor summary that misses something interesting. The memory layout isn't changing…

The "neat result" article linked at the top has some of the missing math: https://kevinventullo.com/2018/12/24/hashing-unordered-sets-... Restated, if abelian G acts transitively o…

reminiscent of http://www.koalastothemax.com/ (although more mobile friendly, as koalas is mouseover based)

Tametsi explores a similar concept, although with mostly-regular non-square grids http://store.steampowered.com/app/709920/Tametsi/

The index of refraction (including its dependence on frequency) fully describes the physics, there's nothing else to look up. Group velocity is a derived property taking into accou…

I was surprised the article didn't add another couple of sentences explaining the finite field construction of the Hamming code. It seems like the important property of β is genera…

https://managore.itch.io/stereogram is an impressive example of the possibilities here, with an animated noise image and interactive depth map.

As best I can tell from reading https://www.stat.purdue.edu/~yuzhu/stat514s2006/Lecnot/fracf... the unstated assumption here is that we're going to do linear regression where (crit…

Sorry, to clarify, it's supposed to be a multi-step process (see https://www.youtube.com/watch?v=mxlvsts3c6o ) where you get it to jump onto land, then it gets kicked to another lo…