pps43

34 ms·

91.
by pps43 6y ago
Revolvers may look simple, but they have lots of small internal parts. More than a typical semi-auto. And they are not reliable in practice. Especially considering that most semi-auto malfunctions can be cleared in a second with tap-rack, b
92.
by pps43 6y ago
> are there suppressors for revolvers? There is https://en.wikipedia.org/wiki/OTs-38_Stechkin_silent_revolve...
93.
by pps43 6y ago
> there isn't a hard theorem why they should sit at +/-3σ There is Vysochanskij-Petunin inequality [1]. 95% of observations should fall within +/-3σ away from the mean, assuming unimodal distribution and finite variance. [
94.
by pps43 7y ago
Not clear why the losses should follow lognormal distribution rather than some less pleasant to work with distribution like Cauchy. Also not clear why loss frequency is assumed to be independent from loss magnitude. Instead of "percent
95.
by pps43 7y ago
COVID-19 mortality is about one order of magnitude higher than that of a regular flu, for every age group. That's a lot. And R0 is higher. And there is no vaccine. And the US botched the response with its stupid "don't test,
96.
by pps43 7y ago
I suspect that cpb is without using vector operations. AVX-512 lets you run 8 generators in parallel, and you can do even better with CUDA.
97.
by pps43 7y ago
Both CLang and GCC do it just fine. CLang even optimizes away unnecessary steps when upper half of one multiplicand is all zeroes like in this example.
98.
by pps43 7y ago
Not so much because they are fast, though, but because they produce more evenly distributed (less clumpy) numbers.
99.
by pps43 7y ago
What's the advantage compared to this: static uint128_t state = 1; // can be seeded to any odd number static inline uint64_t next(){ return (state *= 0xda942042e4dd58b5ULL) >> 64; } from htt
100.
by pps43 7y ago
If you need the speed of this PRNG, you probably don't want the overhead of calling a library function. Instead you would implement it in place with AVX-512 or equivalent for the platform you're running on.
101.
by pps43 7y ago
In many Monte-Carlo algorithms random number generation is responsible for a significant chunk of total runtime. Modern PRNGs like Xoshiro256+ implemented with AVX are much faster than any CSPRNG.
102.
by pps43 7y ago
Combat iPhone is ok only in asymmetric warfare. Near-peer adversary will quickly figure out how to exploit it. Russia has already successfully targeted artillery strikes using location of Ukrainian soldier's phones (Android, but this d
103.
by pps43 7y ago
15 minutes is the US thing. Everyone else is ok with retaliating later. Maybe weeks later. UK and France rely on submarines. China even stores warheads and missiles separately. It's unnecessary and dangerous to try to decide the fate o
104.
by pps43 7y ago
tl;dr: yes First let me address the time investment angle. Not every hour is the same. There are active hours when I'm creating something, having conversations, actively learning. There are passive hours when I'm consuming content
105.
by pps43 7y ago
I wonder if rolling, then flying upside down for a while would have helped.
106.
by pps43 7y ago
Extra points for assembling it from Lego.
107.
by pps43 7y ago
Collaborative filtering cannot recommend new stuff. By the time all your friends have watched and liked the new hotness it's already too late to recommend it to you.
108.
by pps43 7y ago
Netflix is a bad example. After Netflix Prize they stopped trying to make a better recommendation system. They only used a few of the models from the winning ensemble, and now are using something even weaker instead. That said, the competit
109.
by pps43 7y ago
After the EMP you don't set up mesh network. Instead you start moving perpendicular to wind direction, away from the epicenter, to avoid the fallout.
110.
by pps43 7y ago
The article talks about use of lead-based ammunition for wildlife hunting. I see no problem with it. Sure, solid copper rifle bullets are expensive, but you only need one of them per hunting season. Ok, a box to zero the rifle. As long as l
111.
by pps43 7y ago
If you can't modify the original list, you can create another as you iterate. But that will require extra O(N) memory, so is worse than the textbook solution with two pointers.
112.
by pps43 7y ago
They seem to be addressing fake labels, like Nike shoes not made by Nike. And they're working with Nike to identify the fakes. But there are also whole sections dedicated to products that are labeled as approved by some agency that rea
113.
by pps43 7y ago
Before: a->b->c After: a<-b<-c
114.
by pps43 7y ago
How would you end up there? With a loop, head+1 would point to head after the first pass, so you'll end up at the head. With no loop, head+1 would only be passed once.
115.
by pps43 7y ago
Iterate over the list, re-tying it backwards as you go. If you reach the end, there's no loop. If the order is important, you can re-tie again, still in O(N) time. If you end up at the head, there's a loop.
116.
by pps43 7y ago
It's a good start, but stops short of the most interesting parts. The signal to noise section should at least mention the root of forth power in the radar equation, as this is one of the key limitations. Beam forming with mechanical sc
117.
by pps43 7y ago
> If you look at sports records over time, everything gets continuously improves. Some track and field records set in the '80s still stand, e.g., Marita Koch's 400 m, Jürgen Schult's discus throw, Galina Chistyakova&#x27
118.
by pps43 7y ago
European death knot is much easier to learn than zeppelin bend.
119.
by pps43 7y ago
The problem with knots is that there are so many, and even the most popular ones have serious problems. For example, everyone recommends bowline, but it's unsafe without securing the working end. Everyone recommends square knot, but it
120.
by pps43 7y ago
A helicopter can autorotate when its single engine quits, or continue flying when one of its multiple engines quit. Quadrocopter requires all four motors to work to remain in the air. This is a reasonable tradeoff for light hobby drones, bu

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