sharikone (u/sharikone)

sharikone commented on Tom Lehrer has died nytimes.com/2025/07/27/ar... · Posted by u/detaro

syockit · 8 months ago

Isn't a clock and a gyroscope precisely two things that are needed for the missile to know where it is at all times? Like, it can then know where it isn't by subtracting where it is from where it isn't, or where it isn't from where it is, to get the positional deviation. Combine that with the clock deviation, it can get the velocity and acceleration and then use all three information to generate corrective commands.

sharikone · 8 months ago

Yes but not precisely. There is an uncertainty that is difficult to remove.

However, if you combine it with modern image recognition and you know your target it will be probably enough

sharikone commented on Harvard Discriminates Against Middle-Class Kids wsj.com/articles/harvard-... · Posted by u/Bostonian

prepend · 3 years ago

The point isn’t that it’s illegal. The point is that it’s wrong and that Harvard’s admissions process is not a good way to attract the best students.

I think the goal isn’t to fill Harvard with a particular class, but to fill it with amazing students.

sharikone · 3 years ago

My impression is that Harvard will be filled with amazing students nonetheless, there are a lot of them.

It may miss some of the extraordinary ones, though.

sharikone commented on Research Finds Women Are Advantaged in Being Hired in Academic Science journals.sagepub.com/doi/... · Posted by u/jimmybox

sharikone · 3 years ago

This field is like a minefield for critical thinkers given the sensitivity around the issue and the difficulty in finding rigorous answers.

In stuff like that I don't trust the mainstream, nor I do trust any publication that is not very thorough. Since just establishing if a publication is thorough takes too much time for me I am content with a lot of question marks.

I accept that I do not know anything about general trends - only some personal stuff about myself and some people around me which may be or may not be representative.

Surprisingly you can still live well after you accept you are not required to have an informed opinion of this issue. You can still spend your time having fun and writing code

sharikone commented on Show HN: A little web server in C github.com/robdelacruz/lk... · Posted by u/robdelacruz

samtho · 3 years ago

This may sound sort of “old man waves at cloud” of me but one thing I’ve found sad is the gross over-complication of later versions of standards such that the sort of project linked here may not be as practical for something like HTTP/3 for example. Similarly, the large, muddled tool chain that is “required” to make modern JavaScript applications makes it hard for newer learners to really understand what is going on because the minimal code version still needs its own transpiler, build system, linter, process managers, etc. Maybe we need all this complexity, but I suspect that some of the overzealous, solve-everything systems design we have come accustomed to is mainly serving to create a larger problem set instead of creating elegant abstractions that are agreed upon.

sharikone · 3 years ago

Some elegant abstractions are created too. JS modules, for example. Or, in another field, the Language Server Protocol.

But yes, humans are humans and everything that is "simple" will get built upon and then become the backbone of something complex that will engulf and smother it as it evolves.

sharikone commented on The Great Ptolemaic Smackdown: From Plausible to Proven (2013) tofspot.blogspot.com/2013... · Posted by u/telotortium

asimpletune · 3 years ago

Basically the church wasn’t as crazy or evil as they’re portrayed now with their persecution of Galileo: he didn’t actually have convincing evidence because the real theory took hundreds of years later to be accepted. It’s important and satisfying to see our ancestors weren’t simply superstitious mystical fools, just people who were behaving somewhat reasonably with the information they had at the time. The incentives around them played a role but didn’t consume every facet of their decision making. Great article.

sharikone · 3 years ago

The church defended a scientific assertion based on theology and used their (absolute) political power to curb other worldviews.

Even assuming that Galileo could not prove beyond reasonable doubt heliocentrism as a physical model, and that the Church accepted that the Ptolemaic model wasn't valid - the Church took an active part in asserting that "heliocentrism is heresy". They could have said it's not their own matter to pontificate about and they instead went after Galileo asserting that he overstepped his boundaries.

It's very possible that Galileo (and the stories about him in later epochs) was not 100% in his assertions and his arguments. And it's important to look at the history from an objective point of view. However if you look at it as a battle for freedom to do experiment-based research, yes, the church was evil at that time.

sharikone commented on Proton’s mass radius is apparently shorter than its charge radius arstechnica.com/science/2... · Posted by u/raattgift

AnimalMuppet · 3 years ago

TL;DR: Most of the mass comes from the energy of the strong force interactions of the gluons, not from the quarks. The gluons are not charged; the quarks are. The quarks sometimes go beyond the region of most of the gluons, which gives the proton a larger charge radius than mass radius.

sharikone · 3 years ago

In fact gluons have a QCD charge, they just don't have a QED (electric) charge. That QCD charge is basically one color and one anticolor, minus the trace. So there are 8 different basis vectors that define the space for what the charge of a gluon is.

sharikone commented on I bricked then recovered my reMarkable 2 operand.ca/2021/09/27/how... · Posted by u/greenhathacker

kayodelycaon · 4 years ago

The reMarkable is surprisingly good for its primary purpose. Everything else it does... is limited. They things they did do are done well given how they are implemented. The epub/pdf experience sucks because it doesn't have a real pdf reader. It just renders the epub to pdf and then throw the pdf into the note-taking app.

Arguably, none of the functionality is half-assed. It works very well as a writing tablet. It absolutely sucks as a general purpose device because everything except the very core experience is flat-out missing.

There isn't a good general purpose eInk tablet and the reMarkable is the closest thing we have. :(

sharikone · 4 years ago

In defense of the Remarkable its primary purpose is a very useful use-case. No iPad or Android tablet could get me to ditch paper and notebooks altogether. The Remarkable did it.

And since it is hackable the community made interesting strides in other use cases as well

sharikone commented on Arm AArch64 Adds Memcpy() Instructions community.arm.com/develop... · Posted by u/universal_sinc

foxfluff · 4 years ago

The RISC-V hype is crazy, but I feel like it must be a product of marketing. Or I'm missing something big. I've read the (unprivileged) instruction set spec and while it's a nice tidy ISA, it also feels like pretty much a textbook RISC with nothing to set it apart, no features to make it interesting in 2021. And it's not the first open ISA out there. Why is there so much hype surrounding it?

If anything, I got the vibe that they were more concerned about cost of implementation and "scaling it down" than about a future-looking, high-performance ISA. And I'd prefer an ISA designed for 2040s high end PCs rather than one for 2000s microcontrollers..

sharikone · 4 years ago

Their SIMD vectorized instructions are very neat and clean up the horrible mess of x64 ISA (I am not familiar enough with Neon and SVE so I don't know if ARM is a mess too)

sharikone commented on Twitter.com's HTML, which is produced by React Native for Web, explained giuseppegurgone.com/twitt... · Posted by u/ggurgone

robertoandred · 5 years ago

An important distinction that often gets lost is that React itself is an abstract, standalone layer above web and native. It handles deciding what to render and when. When you learn the concepts of React, you're learning this layer.

Then there are layers that decide how to render. Regular React has a renderer that accepts HTML tags spits out HTML for the browser. React Native has a renderer that accepts more abstract tags (<View>, <Text>) and spits out native views for apps. There are other projects that make renderers for making PDFs, animations, etc.

React Native for Web is basically a renderer that accepts the abstract tags React Native uses (<View>, <Text>) and spits out HTML. React Native does not really help you directly port a web app to native, but React Native for Web is designed to directly port a native app to the web.

sharikone · 5 years ago

I am waiting for "React Native for the Web for Native" as a tool to port React Native for the Web pages to native apps.

To be followed by "React Native for the Web for Native for the Web" to port those apps back to the Web..

At some point they will just emulate a browser into a PC into a browser to make your code more portable

sharikone commented on Linux on the Framework Laptop frame.work/blog/linux-on-... · Posted by u/throwawaysea

LeifCarrotson · 5 years ago

Sometimes 'funding the change you want to see' is merely to appease your own conscience; some real problems are systemic or caused by other actors. Turning a 1 L/min sink off for the 20 seconds of washing your hands doesn't matter when the farmer down the road is growing row crops in a desert with center-pivot irrigation system.

But other times, like this? It's absolutely a valid approach. If a high-profile open laptop like this can succeed - which is helped at this scale by individual purchases - maybe some bigger players will take notice.

sharikone · 5 years ago

You'd be surprised by how much water has been saved in droughts by encouraging this kind of small scale efforts. E.g. the Cape Town water crisis