Readit News logoReadit News
Sharlin commented on F-35 pilot held 50-minute airborne conference call with engineers before crash   cnn.com/2025/08/27/us/ala... · Posted by u/Michelangelo11
rswail · 6 hours ago
Army, Marines, Navy?
Sharlin · 5 hours ago
Air Force. The Army doesn't operate the F-35.
Sharlin commented on F-35 pilot held 50-minute airborne conference call with engineers before crash   cnn.com/2025/08/27/us/ala... · Posted by u/Michelangelo11
gukov · 6 hours ago
Isn’t F-35 capable of VTOL? Couldn’t they just land on the belly? Or the malfunctioning landing gears disabled VTOL?
Sharlin · 6 hours ago
No. F-35A is conventional take-off and landing. F-35B is STOVL. F-35C is CATOBAR (catapult take-off, arrestor landing).
Sharlin commented on F-35 pilot held 50-minute airborne conference call with engineers before crash   cnn.com/2025/08/27/us/ala... · Posted by u/Michelangelo11
HPsquared · 7 hours ago
I wonder if the ejection seat has different levels of acceleration depending on the situation.
Sharlin · 6 hours ago
I don't think so. It's a solid rocket motor, there's no modulating such things.
Sharlin commented on F-35 pilot held 50-minute airborne conference call with engineers before crash   cnn.com/2025/08/27/us/ala... · Posted by u/Michelangelo11
tsunamifury · 7 hours ago
It’s interesting now that a side effect of LLMs is that people can say anything outside their experience is just a hallucination. I didn’t realize how the fear of hallucination could enable this level of belligerence.
Sharlin · 7 hours ago
The goal of information warfare was never to make you blindly trust sources that should not be trusted. The goal is to fill your brain with conflicting information so you're not sure what or who to trust anymore.

In this post-truth era it's strangely apt that confabulation in particular happened to be a major failure mode of our shiny new AI tech. Almost too apt for it to be a mere coincidence…

Sharlin commented on A simple way to generate random points on a sphere   johndcook.com/blog/2025/0... · Posted by u/piinbinary
sfpotter · 2 days ago
So, I guess the asymptotic behavior does matter, and what I saying was relevant?
Sharlin · 2 days ago
I'm not sure if you're being difficult on purpose.

What I meant is that there's a specific use case for the rejection sampling algorithm, namely computer graphics, and in that use case the asymptotic behavior is irrelevant because n will never not be 3. What is relevant is that the algorithm is more obvious to non-statisticians than Box-Muller, and Marsaglia's variant in particular is also more efficient. Sqrt, ln, and sincos aren't particularly fast operations even on modern hardware (and the latter two aren't SIMDable either), whereas generating uniform variates is almost free in comparison.

Sharlin commented on What are OKLCH colors?   jakub.kr/components/oklch... · Posted by u/tontonius
brulard · 2 days ago
Let's say you continuously change wavelength of a laser from blue (~480nm) to red (~630nm), you are going through green, not through gray. If in your use case going through gray makes sense, that's ok, there may be many paths from one color to another.
Sharlin · 2 days ago
In general people don't really think of color in terms of the spectral progression (or the hue wheel), and I don't think that most people intuitively expect a gradient between two colors to pass through another "unrelated" primary or secondary color. The point is somewhat moot though, given that such gradients (like yellow to blue or red to green) are very unnatural anyway.
Sharlin commented on What are OKLCH colors?   jakub.kr/components/oklch... · Posted by u/tontonius
spoiler · 2 days ago
It's not a bug, its a property of the colour space. Which is partially tied to how the colour is represented (RGB). When doing linear interpolation through the RGB cube (for eg a gradient), you normally pick the shortest path. It just so happens that sometimes that path passes thorough some shade of gray as different colour components are scaled.

Usually you fix it by moving your point through a different colour space. Choice depends on your requirements and mediums you're working with (normally different types of light sources or screens).

I had to write a low level colour interpolation librar for a few interactive art projects, so I dipped a bit into this, but I'm no colour expert

Sharlin · 2 days ago
I think GP is referring to the difference between "normal" (gamma-encoded) sRGB and linear sRGB. Though it's not logarithmic but a power law. In any case linear interpolation done in non-linear sRGB gives you intermediate colors that are darker than they should (though historically it's been so common in computer graphics that people are accustomed to it).
Sharlin commented on A simple way to generate random points on a sphere   johndcook.com/blog/2025/0... · Posted by u/piinbinary
sfpotter · 3 days ago
It is? How do you know? You're saying there are no uses in statistics, data science, numerical linear algebra, etc?
Sharlin · 3 days ago
Um, exactly because it’s fast in 3D (particularly Marsaglia’s two-variate version) but rapidly becomes useless in higher dimensions.
Sharlin commented on US attack on renewables will lead to power crunch that spikes electricity prices   cnbc.com/2025/08/24/solar... · Posted by u/rntn
SamuelAdams · 3 days ago
I am speculating, but I think the real motive for cancelling renewables is to appeal to coal counties in the USA.

Coal is in a scary place right now in the US, see this as an example:

https://www.reddit.com/r/antiwork/comments/1mmqwd3/i_live_in...

Basically coal is less profitable and more expensive in places that have always been coal counties. The only thing to do in these areas is mine coal, so the concern is that entire regions will be rendered worthless if coal collapses.

Which means local residents cannot sell their homes without taking significant losses, and they probably lose their jobs in coal, which manifests into a poverty trap for the entire town.

And there are hundreds of these towns all through Appalachia.

So renewable energy will always be a political issue over the next 50 years, because entire towns and regions depend on its political outcome.

Sharlin · 3 days ago
At the same time there are hundreds of towns in low-lying areas that are being rendered worthless by the climate change.
Sharlin commented on A simple way to generate random points on a sphere   johndcook.com/blog/2025/0... · Posted by u/piinbinary
mkaic · 4 days ago
My favorite way to generate random points on a n-dimensional sphere is to just sample n times from a Gaussian distribution to get a n-dimensional vector, and then normalizing that vector to the radius of the desired sphere.
Sharlin · 4 days ago
Mentioned in the article. Surely you read it, didn't you?

u/Sharlin

KarmaCake day17286June 19, 2009View Original