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krastanov

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Ask HN: A Single Board Computer for a phone alternative

1 points·by krastanov·hace 6 meses·1 comments

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krastanov
·hace 2 meses·discuss
It is recent and still uncommon that private universities have a grad student union. The US also has many great public universities that have had grad student unions since forever
krastanov
·hace 3 meses·discuss
Who has been projecting FTL as a realistic technology ever? FTL is not possible according to the current laws of Physics, while AGI is at least not forbidden by them.
krastanov
·hace 3 meses·discuss
I read OP differently. I thought they said "we should invest in non-dystopian public safety[1] to avoid dystopian populist creating a 1984 version of public safety".

[1]: I imagine this includes things like mental heath help, housing, and other related social safety nets.
krastanov
·hace 3 meses·discuss
> And that state of the art has not moved much in the last decade

This is far from true. On the experimental side, gate fidelities and physical qubit numbers have increased significantly (a couple of orders of magnitude). On the theory side, error correction techniques have improved astronomically -- overhead to of error corrections has dropped by many orders of magnitude. On the error correction side progress has been feverish over the last 4 years in particular.
krastanov
·hace 4 meses·discuss
This sounds incredibly naive. Competition does not magically prevent monopolies -- once you have a dominant player they just buy or undercut the occasional competing startup.
krastanov
·hace 4 meses·discuss
I am sorry, I did not mean to imply anyone else is doing something poorly. I believe glibc's (and the rest of the ecosystem of libraries that are probably more limiting) policies and principled stance are quite correct and overall "good for humanity". But as you mentioned, they are inconvenient for a gamer that just wants to run an executable from 10 years ago (for which the source was lost when the game studio was bought).
krastanov
·hace 4 meses·discuss
Wine's APIs are more stable than Linux's APIs, so it seems more plausible to me that Wine will become the first class target itself.
krastanov
·hace 4 meses·discuss
non-deterministic does not mean it is not biased towards a particular type of results (helpful results)
krastanov
·hace 4 meses·discuss
This is fascinating to me. I completely believe you and I will not bother you with all the common "but did you try to tell it this or that" responses, but this is such a different experience from mine. I did the exact same task with claude in the Julia language last week, and everything worked perfectly. I am now in the habit of adding "keep it simple, use only public interfaces, do not use internals, be elegant and extremely minimal in your changes" to all my requests or SKILL.md or AGENTS.md files (because of the occasional failure like the one you described). But generally speaking, such complete failures have been so very rare for me, that it is amazing to see that others have had such a completely different experience.
krastanov
·hace 5 meses·discuss
I know that China is an authoritarian near-dictatorial country that oppresses minorities and commits cultural genocide. And I am not an American.

That does not seem to be all that related to the original post I was answering to. An average person / citizen / visitor has way less to worry about around (trained) Chinese police than they have to worry about around an (gangster) American ICE agent.
krastanov
·hace 5 meses·discuss
Strict police does sound quite a bit less bad than fascist police...
krastanov
·hace 5 meses·discuss
As an aside, it is really interesting to see a computational package that, while supporting multiple GPU vendors, was first vetted on AMD, not NVidia. It is encouraging to see ROCM finally shaking off its reputation for poor support.
krastanov
·hace 5 meses·discuss
I am happy to hear that things as not as bad as I thought, but my experience being judge/mentor for a couple of years for the high school science fair near a top university was very discouraging and closer to what the author of the article describes.

Maybe the mass of the kids at the first round were what you describe, but very quickly the focus turned to the top 20% who were very much "reputation laundering" and "CV padding" internships at labs, not actual curiosity driven independent exploration
krastanov
·hace 5 meses·discuss
Reviewing a quick translation of a test to a benchmark (or another menial coding tasks) is way less soul-sucking than doing the menial coding by yourself. Boring soul-sucking tasks are an important thankless part of OSS maintenance.

I concur it is different from what you call vibecoding.
krastanov
·hace 5 meses·discuss
I maintain serious code bases and I use LLM agents (and agent teams) plenty -- I just happen to review the code they write, I demand they write the code in a reviewable way, and use them mostly for menial tasks that are otherwise unpleasant timesinks I have to do myself. There are many people like me, that just quietly use these tools to automate the boring chores of dealing with mature production code bases. We are quiet because this is boring day-to-day work.

E.g. I use these tools to clean up or reorganize old tests (with coverage and diff viewers checking of things I might miss), update documentation with cross links (with documentation linters checking for errors I miss), convert tests into benchmarks running as part of CI, make log file visualizers, and many more.

These tools are amazing for dealing with the long tail of boring issues that you never get to, and when used in this fashion they actually abruptly increase the quality of the codebase.
krastanov
·hace 6 meses·discuss
In my post I actually made a number of (seemingly unclear) claims diametrically opposite to what you surmise I claimed in my original post.
krastanov
·hace 6 meses·discuss
I find this type of posts unproductive, somewhat emotionally exhausting, and generally impolite.

Most of the time open source tools are a labor of love. If the tool is not for you, move on. But self-aggrandizing "this tool is not good enough for me" posts, when you have not contributed, and when you disregard the fact that the tool has been immensely helpful to many others (who might have even started contributing back) just creates negativity in the world for no good reason. Nothing good is created in posts like that (and no, such posts are not constructive critique).

And then there are "the language is dying" complaints -- I consider these the worst of all. A tool does not need to be the most popular tool to be useful. Let's stop chasing hockey-stick curves in all human endeavors.

(to prevent claims of sour grapes: I am not a Scala user, I just find this type of posts distasteful, no matter the target)
krastanov
·hace 7 meses·discuss
Usually they randomly shoot atoms at the substrate and then just search for a spot (among thousands) where it randomly has the configuration they want. Still pretty amazing.
krastanov
·hace 7 meses·discuss
Shor's algorithm does not start with the qubits storing anything related to the n-bit number to be factored. The n-bit number is encoded *only* in the XOR-oracle for the multiplication function.

Shor's algorithm starts with the qubits in a superposition of all possible bitstrings. That is the only place we have exponentially small amplitudes at the start (in a particular choice of a basis), and there is no entanglement in that state to begin with.

We do get interesting entangled states after the oracle step, that is true. And it is fair to have a vague sense that entanglement is weird. I just want to be clear that your last point (forgetting about amplitudes, and focusing on the weirdness of entangled qubits) is a gut feeling, not something based in the mathematics that has proven to be a correct description of nature over many orders of magnitude.

Of course, it would be great if it turns out that quantum mechanics is wrong in some parameter regime -- that would be the most exciting thing in Physics in a century. There is just not much hope it is wrong in this particular way.
krastanov
·hace 7 meses·discuss
The initial state was the example given. It is fair to then point out the consecutive states though. A few points still hold:

- I am not saying that you have to find a basis in which your amplitudes are not small, I am saying that such a basis always exists. So any argument about "small amplitudes would potentially cause problems" probably does not hold, because there is no physical reality to "an amplitude" or "a basis" -- these are all arbitrary choices and the laws of physics do not change if you pick a different basis.

- In classical probability we are not worried about vanishingly small probabilities in probability distributions that we achieve all the time. Take a one-time pad of n bits. Its stochastic state vector in the natural basis is filled with exponentially small entries 1/2^n. We create one-time pads all the time and nature does not seem to mind.

- Most textbooks that include Shor's algorithm also include proof that you do not need precise gates. Shor's algorithm (or the quantum Fourier transform more specifically) converges even if you have finite absolute precision of the various gates.

- Preparing the initial state to extremely high precision in an optical quantum computer is trivial and it has been trivial for decades. There isn't really much "quantum" to it.

- It is fair to be worried about the numerical stability of a quantum algorithm. Shor's algorithm happens to be stable as mentioned above. But the original point by OP was that physics itself might "break" -- I am arguing against that original point. Physics, of course, might break, and that would be very exciting, but that particular way of it breaking is very improbable (because of the rest of the points posted above).