_zachs (u/_zachs) - Readit News

_zachs commented on The Pentagon threatens Anthropic astralcodexten.com/p/the-... · Posted by u/lukeplato

MarcelOlsz · 18 days ago

Yeah except in their society some cool shit happens at least.

_zachs · 18 days ago

Yeah I'm sure the Uyghurs there can tell you all about the cool shit going down for them!

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

_zachs commented on IDF killed Gaza aid workers at point blank range in 2025 massacre: Report dropsitenews.com/p/israel... · Posted by u/Qem

yosamino · 19 days ago

> Hamas murdering their own citizens again

A good test of whether claim like this is true is to swap out the actor and put in "the Jews"

Like this:

> The Jews murdering their own citizens again

Suddenly it sounds like an antisemitic conspiracy theory.

And the reason why that works, is that antisemitism has nothing to do with Jews, for stupid reasons they just ended up as the victim of it.

What it does do, is expose antisemitic thinking, which is, in the end, really just concentrated anti-human thinking.

So if I was you, I would start examining how I construct argument and critically evaluate information I come across.

_zachs · 18 days ago

I think that's a pretty loaded statement and honestly wild way to make comparisons. What do "The Jews" have to do with this?

https://www.youtube.com/watch?v=dvxV4knxpLQ

This isn't some claim, Hamas is happy to film themselves doing things like this, e.g., October 7th.

_zachs commented on Claude Code daily benchmarks for degradation tracking marginlab.ai/trackers/cla... · Posted by u/qwesr123

_zachs · a month ago

This is super important - even if it's not currently the best measure of degradation yet. Anecdotally, Opus 4.5 has gotten so bad for me it's almost adding time to my workflow instead saving it. It'd be nice to have more 3rd party measurements like this to hold Anthropic accountable.

_zachs commented on Ask HN: Who is hiring? (September 2025) · Posted by u/whoishiring

_zachs · 6 months ago

MeritFirst | Software Engineer | Austin, TX (onsite)

MeritFirst is a VC-backed startup building a new way to identify talent, where intelligence, problem-solving, and adaptability matter more than credentials. We're a small, profitable team using a modern stack (TypeScript, Next.js, Postgres/Drizzle, Vercel).

You'll work side-by-side with the founders, own features end-to-end, and have direct input into product decisions. Competitive salary + equity.

Apply here: https://meritfirst.us/candidate/tests/46e6bb96-3c1e-4451-ac8...

_zachs commented on Ask HN: Who is hiring? (August 2025) · Posted by u/whoishiring

_zachs · 7 months ago

MeritFirst | Software Engineer | Austin, TX (onsite)

MeritFirst is a VC-backed startup building a new way to identify talent, where intelligence, problem-solving, and adaptability matter more than credentials. We're a small, profitable team using a modern stack (TypeScript, Next.js, Postgres/Drizzle, Vercel).

You'll work side-by-side with the founders, own features end-to-end, and have direct input into product decisions. Competitive salary + equity.

Apply here: https://meritfirst.us/candidate/tests/46e6bb96-3c1e-4451-ac8...

_zachs commented on Hollywood movie aside, just how good a physicist was Oppenheimer? science.org/content/artic... · Posted by u/andrewl

kahnclusions · 3 years ago

Yeah I don't think it's fair to compare him that way. Einstein on the other hand benefited a lot from the timing of when he was born and started working in physics. His work was very much built upon that of others... Maxwell discovered the relationship between electromagnetism and light, Michelson inadvertently proved 'c' was a constant, Lorentz described the transformations between frames of reference and effects like time dilation and length contraction. It sounded like Lorentz was on the verge of special relativity but just couldn't accept the universe being that weird. I think what it took was not a super-genius, but someone smart who was willing to embrace the weirdness and take these ideas together to their logical conclusion.

_zachs · 3 years ago

You can take kahnclusions' word for it, or you can take Eugene Wigner's:

> I have known a great many intelligent people in my life. I knew Planck, von Laue and Heisenberg. Paul Dirac was my brother in law; Leo Szilard and Edward Teller have been among my closest friends; and Albert Einstein was a good friend, too. But none of them had a mind as quick and acute as Jancsi (John) von Neumann. I have often remarked this in the presence of those men and no one ever disputed. But Einstein's understanding was deeper even than von Neumann's. His mind was both more penetrating and more original than von Neumann's. And that is a very remarkable statement. Einstein took an extraordinary pleasure in invention. Two of his greatest inventions are the Special and General Theories of Relativity; and for all of Jancsi's brilliance, he never produced anything as original.

_zachs commented on Show HN: I created a game to memorize the fretboard fretboardfly.com... · Posted by u/udit99

_zachs · 3 years ago

Really cool! Like i_c_b mentioned my only feedback is that, even in the practice mode, there's a lot of negative feedback.

I'd recommend adding a step to the practice mode where whatever highlighted region of the fretboard you're practicing has all of the notes visible, and then over time the notes are taken away as you build up your memorization.

_zachs commented on Production Twitter on one machine? 100Gbps NICs and NVMe are fast thume.ca/2023/01/02/one-m... · Posted by u/trishume

aetimmes · 3 years ago

(Disclaimer: ex-Twitter SRE)

> There’s a bunch of other basic features of Twitter like user timelines, DMs, likes and replies to a tweet, which I’m not investigating because I’m guessing they won’t be the bottlenecks.

Each of these can, in fact, become their own bottlenecks. Likes in particular are tricky because they change the nature of the tweet struct (at least in the manner OP has implemented it) from WORM to write-many, read-many, and once you do that, locking (even with futexes or fast atomics) becomes the constraining performance factor. Even with atomic increment instructions and a multi-threaded process model, many concurrent requests for the same piece of mutable data will begin to resemble serial accesses - and while your threads are waiting for their turn to increment the like counter by 1, traffic is piling up behind them in your network queues, which causes your throughput to plummet and your latency to skyrocket.

OP also overly focuses on throughput in his benchmarks, IMO. I'd be interested to see the p50/p99 latency of the requests graphed against throughput - as you approach the throughput limit of an RPC system, average and tail latency begin to increase sharply. Clients are going to have timeout thresholds, and if you can't serve the vast majority of traffic in under that threshold consistently (while accounting for the traffic patterns of viral tweets I mentioned above) then you're going to create your own thundering herd - except you won't have other machines to offload the traffic to.

_zachs · 3 years ago

Thanks for the insight! At a high-level, how did Likes work when you were at Twitter? Were a certain amount of Like requests batched then applied at the DB level at the same time to ease writes?