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contravariant commented on Playing every game of Wordle simultaneously   chriskw.xyz/2025/08/24/Hy... · Posted by u/chriskw
ktallett · 2 days ago
What's the point? You play these games to improve your own mind, or for your own enjoyment.
contravariant · 2 days ago
No you see chatgpt is doing the thinking for us now, instead of using your own brain to struggle with a puzzle that is trivial to solve for a simple algorithm you can let a language model struggle with it for you! You get all of the enjoyment from solving a puzzle with an inefficient overly complicated general purpose solver, without needing to put in any work yourself!
contravariant commented on Show HN: Sping – An HTTP/TCP latency tool that's easy on the eye   dseltzer.gitlab.io/sping/... · Posted by u/zorlack
contravariant · 2 days ago
I'm a bit curious why some times like 190ms don't get even slightly highlighted as an outlier when regular traffic is clearly 125+/-5ms
contravariant commented on Monero appears to be in the midst of a successful 51% attack   twitter.com/p3b7_/status/... · Posted by u/treyd
OneDeuxTriSeiGo · 15 days ago
There is such a thing as useful proof of work. Qubic may not be doing it but it does exist. The linked papers [1][2] are examples of way to do it. They aren't 100% "useful" but rather achieve partial efficiency by essentially forcing miners down random paths in a manner that limits the ability to complete work ahead of time or otherwise "cheat".

1. https://eprint.iacr.org/2021/1379

2. https://eprint.iacr.org/2023/1059

contravariant · 15 days ago
Proof of useful work feels like it's one and a half steps removed from discovering seigniorage and reinventing money.
contravariant commented on Wikipedia loses challenge against Online Safety Act   bbc.com/news/articles/cjr... · Posted by u/phlummox
amenhotep · 16 days ago
Because, as someone living in the UK, the only way people here are going to realise what's going on and apply meaningful pressure to the government is if these organisations force us to. And because once they've given up on one country, they'll give up on the rest just as easily.
contravariant · 16 days ago
Sure, but letting the UK government block wikipedia makes things _much_ clearer for everyone.
contravariant commented on Compressing Icelandic name declension patterns into a 3.27 kB trie   alexharri.com/blog/icelan... · Posted by u/alexharri
silvestrov · 25 days ago
One more optimization idea: instead of the trie mapping to the suffix string directly, then instead make an array of unique suffixes and let the trie map to the index into the array, e.g.

    const suffixes = [",,,", "a,u,u,u", ",,i,s", ",,,s", "i,a,a,a", ...];
and then use the index of this list in the

    var serializedInput = "{e:{n:{ein:0_r: ...

contravariant · 25 days ago
You could go a step further by putting the suffixes themselves into the trie and then identifying identical subtrees.

If you can use gzip there's bound to be a clever way of using a suffix array as well, that might end up being better unless you can use an optimised binary format for the tree.

contravariant commented on Caches: LRU vs. Random   danluu.com/2choices-evict... · Posted by u/gslin
hinkley · 25 days ago
When the cost of different requests varies widely it’s difficult to get it right. When we rolled out docker I saw a regression in p95 time. I countered this by doubling our instance size and halving the count, which made the number of processes per machine slightly more instead of way less than the number of machines. I reasoned that the local load balancing would be a bit fairer and that proved out in the results.
contravariant · 25 days ago
I'm not 100% sure if it's just load balancing. It would depend on the details of the setup but that situation also allows you to throw more resources at each request.

I mean obviously there is a point where splitting up the instances doesn't help because you're just leaving more instances completely idle, or with too little resources to be helpful.

contravariant commented on Caches: LRU vs. Random   danluu.com/2choices-evict... · Posted by u/gslin
hinkley · 25 days ago
I have never been able to wrap my head around why 2 random works better in load balancing than leastconn. At least in caching it makes sense why it would work better than another heuristic.
contravariant · 25 days ago
Technically it doesn't, it's just really hard to implement leastconn correctly.

If you had perfect information and could just pick whichever was provably lowest that'd would probably work. However keeping that information up to date also takes effort. And if your information is outdated it's easy to overload a server that you think doesn't have much to do or underload one that's long since finished with its tasks. Picking between 2 random servers introduces some randomness without allowing the spread to become huge.

contravariant commented on At 17, Hannah Cairo solved a major math mystery   quantamagazine.org/at-17-... · Posted by u/baruchel
skeptrune · a month ago
I think the biggest flaw with higher education today is that we're pushing people into doing undergraduate degrees who are already well beyond coming out of self learning from high school or other experiences.
contravariant · a month ago
To the right people a university education can be an asset rather than a barrier to entry.
contravariant commented on Matrix Is Not Safe for EU Data Privacy?   wire.com/en/blog/matrix-n... · Posted by u/mikece
forty · a month ago
Weird argument: "they are in the UK, which is not in the EU, bouh! Look at us, we are in Switzerland, which is... also not in the EU..."
contravariant · a month ago
Not being subject to the UK and US surveillance laws seems as good an argument as any.

Though I'm not sure if the GDPR allows for data to be stationed in Switzerland. It's not EU but it is party to a lot of treaties so it's not out of the question.

Ironically it might become a safer place to station data if the EU manages to push through more surveillance decrees.

contravariant commented on Stop selling “unlimited”, when you mean “until we change our minds”   blog.kilocode.ai/p/ai-pri... · Posted by u/heymax054
aeon_ai · a month ago
AI isn't a stylistic preference or minor enhancement, but cognitive augmentation that allows developers to navigate complexity at scales human cognition wasn't designed for.

Just as the developer who refused to adopt version control, IDEs, or Stack Overflow eventually became unemployable, those who reject tools that fundamentally expand their problem-solving capacity will find themselves unable to compete with those who can architect solutions across larger possibility spaces on smaller teams.

Will it be used for absolutely every problem? No - There are clearly places where humans are needed.

But rejecting the enormous impact this will have on the workforce is trading hype goggles for a bucket of sand.

contravariant · a month ago
If reading your code requires navigating complexity that human cognition wasn't designed for then something has gone terribly wrong.

u/contravariant

KarmaCake day8905March 19, 2015
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