Readit News logoReadit News
lodi commented on 1-bit CPU for 'super low-performance computer' launched – sells out promptly   tomshardware.com/pc-compo... · Posted by u/a_crc
lodi · 2 years ago
But imagine a Beowulf cluster of these!
lodi commented on Microsoft Flight Simulator tricked me into getting a pilot's license   theverge.com/23653862/msf... · Posted by u/satoshiiii
lodi · 3 years ago
Guitar hero legitimately tricked me into learning (electric->classical->flamenco) guitar...
lodi commented on The Well-Being Gap Between Liberals and Conservatives   americanaffairsjournal.or... · Posted by u/noch
yodon · 3 years ago
>In my experience liberals tend to have less coherent philosophies and understanding about how the world works

You may want to test whether you're trapped in a confirmation bias bubble, as sounds likely.

Each group, conservatives and liberals, tends to feel the other group has "less coherent philosophies and understanding about how the world works" than their own group.

lodi · 3 years ago
I think GP is pointing out a legitimate asymmetry between the "two sides": there's one* way for a conservative to do things the way they've always been done, and there's an infinite* number of ways for a progressive to change things to do something different, for better or for worse. The Paradox of Choice affects one side much, much more than the other.

https://en.wikipedia.org/wiki/The_Paradox_of_Choice

* I'm exaggerating a bit of course.

lodi commented on For long-term health and happiness, marriage still matters   wsj.com/articles/for-long... · Posted by u/lxm
lapcat · 3 years ago
> It isn’t very openly discussed

We're openly discussing it right now.

I'm truly baffled by the idea that it isn't openly discussed.

lodi · 3 years ago
GP isn't saying that this topic is literally censored; he's saying that discussing it is taboo, and increasingly so.
lodi commented on Egypt: Corridor in Great Pyramid of Giza seen for first time   bbc.com/news/world-middle... · Posted by u/ZeljkoS
lodi · 3 years ago
Surely they mean "seen for the second time".
lodi commented on Intel Publishes Fast AVX-512 Sorting Library, 10~17x Faster Sorts in NumPy   phoronix.com/news/Intel-A... · Posted by u/mfiguiere
fancyfredbot · 3 years ago
AVX-512 is wide enough to process 8 64 bit floats at once. To get a 10x speedup with an 8 wide SIMD unit is a little difficult to explain. Some of this speedup is presumably coming from fewer branch instructions in addition to the vector width. It's extremely impressive. Also, it has taken Intel a surprisingly long time!
lodi · 3 years ago
It's not "8-wide", it's "512-bits wide". The basic "foundation" profile supports splitting up those bits into 8 qword, 16 dword, etc. while other profiles support finer granularity up to 64 bytes. Plus you get more registers, new instructions, and so on.
lodi commented on Half of Americans now believe that news organizations deliberately mislead them   fortune.com/2023/02/15/tr... · Posted by u/jwond
kthejoker2 · 3 years ago
What sources do you personally trust?
lodi · 3 years ago
Not OP but for me it's not about what sources to trust (blindly? literally none of them), but what type of information you can trust. Naked facts seem to be safe for the time being, context should be assumed to be heavily biased in a particular direction, and opinions are worse than worthless.
lodi commented on ChatGPT prefers to let a nuke explode than offend African-Americans   twitter.com/KindredSailfi... · Posted by u/fidgewidge
lodi · 3 years ago
Slight tangent: does anybody know how these models are tuned to censor certain topics so precisely? I thought it was a bit of a black box how things worked internally?
lodi commented on The Magic of Sampling, and Its Limitations   research.swtch.com/sample... · Posted by u/gen220
ckelly · 3 years ago
It has always surprised me that many technology professionals (and business professionals in general) don't have a strong intuition for the power of sampling. For example, in this case, the author states: "With 100 samples, our estimates are accurate to within about 5%. The magic of sampling is that we can derive accurate estimates about a very large population using a relatively small number of samples. In the last scenario (100 billion M&MS), we have 1% accuracy despite only sampling 0.00001% of the M&Ms."

I bet many would think n=100 would be worthless once the population reaches millions, or especially billions.

One HN-related piece of evidence for that is when I pointed out what margin of error would be for a n=164 survey sample, I got downvoted hard! https://news.ycombinator.com/item?id=8050801

But I saw this hundreds of times talking to customers when I ran a survey sampling product out of YC.

lodi · 3 years ago
I was thinking about this last week[1] and I think that both the "math" people and "common sense" people are correct in a sense, and talking past each other. The math people are of course mathematically correct within the limits of the constructed model, given all the assumptions of perfectly random sampling, no systemic error, etc. Meanwhile common sense people are correct in a practical sense: small samples are vulnerable to sampling error, p-hacking, outright fraud, etc. Even before you're aware of the exact mechanisms by which things can go wrong you intuitively know that small/cheap studies are more vulnerable to some kind of honest human error or dishonest... shenanigans.

---

[1] I was listening to a podcast where trolley problems were brought up and the speaker was lamenting how clearly "unethical" and "irrational" your evolved intuition is given that most people will let the train hit 10 men working on the tracks than to divert it and kill 1 innocent. Trolley problems are intellectually interesting for various reasons but jumping to that conclusion is clearly absurd. Your intuitions are shaped by millions of years of genetic and social evolution to precisely be most rational for actual real-life problems. If you were actually standing at that switch you'd be thinking...

* do I actually trust my eyes in this situation? Are the workers on a parallel track and there's no actual problem here?

* if I pull the switch, will it derail the train and kill N+1 people instead of the 10.

* will the workers just notice the train in time and scurry off the track? Or will the train just stop? How good are brakes on a train anyway?

* how much time do judges and juries spend solving trolley problems?

... and while you were paralyzed thinking about these and a million other things, whatever was about to happen would happen and there would be no trolley problem.

lodi commented on Why the conventional wisdom on how to grow muscles is wrong   mennohenselmans.com/optim... · Posted by u/wendyshu
lodi · 3 years ago
I think the points he makes in the article actually perfectly match the "broscience" in powerlifting and olympic weightlifting. There it's all about long rest between sets, low reps, tracking weekly pounds lifted, hitting the same muscles many times per week, etc. I was nodding along at everything thinking "this is obvious isn't it" and had to remind myself he's writing about a different field.

u/lodi

KarmaCake day553September 28, 2016View Original