HNHacker News
TopNewBestAskShowJobs

thechao

5,801 karma · joined September 23, 2013

submissionscomments
thechao··on Swift at Apple: Migrating the TrueType hinting interpreter
Its a set cover problem, and is NP-hard. 4100 of something probably runs nicely in your laptop in a reasonable amount of time.
thechao··on Show HN: I Derived a Pancake
I go down to Abby Jane in Dripping Springs to get my freshly made sourdough, thankyouverymuch.
thechao··on Show HN: I Derived a Pancake
A ten hour wait doesn't really strike me as a pancake? You should have a "it's 730am, there's four screaming girls, only two of which are related to me, the dogs are begging for scraps, and the demand for pancakes has crossed into Veblen goods territory."
thechao··on What Is a Dickover?
REI threw a dickover on top of my checkout page just before I could pay. Dismissing the dickover cleared the checkout page.
thechao··on The dead economy theory
The leverage doesn't end unless the AI-owning capital class Terminates the rest of the population.
thechao··on A few interesting modern pixel fonts
Maybe Morse is just "out", right now, in the geek population? I shall send out the signal for us to unite: ... ___ ... ___ ...

Hm. Morse makes adding an ellipsis remarkably challenging!

thechao··on A few interesting modern pixel fonts
_ .... . ... .... ___ ._. _ . ... _ .._. ___ _. _ .__ ___ .._ ._.. _.. _... . ._ __ ___ ._. ... . _._. ___ _.. . .._. ___ _. _ ._._._
thechao··on A few interesting modern pixel fonts
I felt personally attacked when LLMs came out: I'm an avid user of "—", bullets, numbered lists, and the word "delve". It's been a miserable couple of years.
thechao··on We need to add 6k seats to Congress
I still think biased sortition is the way: after voting, eliminate any candidate with less than (say) 1/11th the vote. Choose the winner proportional to the number of votes they received. It has the following nice properties:

1. Extreme candidates have very little chance of winning;

2. The system is (formally) fair in the long run; and,

3. It secures the election against tampering from both domestic and foreign actors.

Also, frankly, the sort of person who's good at winning an election is almost diametrically opposite from the sort of person you want as a leader. It's hard to combine "ideologue" with "rational compromise ready actor".

thechao··on An OpenAI model has disproved a central conjecture in discrete geometry
You can build a census of all gen-2, degree-2 formal products of polynomial like terms. If you insist on instituting your own rewrite rules and identity tables, it is straightforward — maybe an 15 minutes of compute time — to perform a complete census of all of the algebraic structures that naturally emerge. Every even vaguely studied algebra that fits in the space is covered by the census (you've got to pick a broad enough set of rewrite- and identity- operations). There's even a couple of "unstudied" objects (just 2 of the billion or so objects); for instance:

    (uv)(vu) = (uu)(vv)
Shows up as a primitive structure, quite often.

If you switch to degree-3 or generator-3 then the coverage is, essentially, empty: mathematics has analyzed only a few of the hundreds (thousands? it's hard to enumerate) naturally occurring algebraic structures in that census.

thechao··on The Mercury logic programming system
The closest that I could find to a "what the fuck is this?" page is:

https://www.mercurylang.org/about.html

thechao··on Tesla Wall Connector bootloader bypasses the firmware downgrade ratchet
I do as well with a NEMA?
thechao··on MacBook Neo Deep Dive: Benchmarks, Wafer Economics, and the 8GB Gamble
90 would've been impressive. 9 out of 8 is rookie numbers.
thechao··on Knitting bullshit
I'm from Texas and we use bullshit & tall-telling as an entertainment art (this is my background; I do t think it's specific!). This definition of bullshit is spot on; I'm pretty proud of my ability to bullshit-for-entertainment, so AI bullshit really grinds my gears... it's so bad.
thechao··on Knitting bullshit
I think the question he's asking is this: is it an ad ouroboros, or is there some other (nefarious?) intentionality behind it?

My hot take: porque no los dos?

thechao··on Removable batteries in smartphones will be mandatory in the EU starting in 2027
I think the USB & speaker are the weak links for water ingress. Also, a removable battery would (probably?) significantly weaken the phone. So, if you dropped it, it'd be more likely to sustain real damage.
thechao··on Credit cards are vulnerable to brute force kind attacks
I discovered this "quirk" when the local ice rink started charging me for dozens of charges — I was watching them come in. There were two "child2 thechao"s (insert crazy common name); and ... they just picked one and started charging. They didn't want to reverse the charges because the mom of child2 didn't want to pay.
thechao··on American Dads Became the Parents Their Fathers Never Were
I got to spend a bit more than 2 years doing math homework 1:1 with my youngest. Now, she's moving up to honors & gets 100% without any help. I miss all that time we got to hang out, do homework, watch videos of cats, etc.
thechao··on Full-Text Search with DuckDB
My honeymoon with duckdb wore off pretty quickly when I need to compile it, myself, into a single-file concordance. I understand it's open source, so I'm free to be ignored. But, it's positioning itself as a drop-in replacement for SQLite; a large part of SQLite's appeal is its ergonomics — its single-fileness — letting me deliver a rational object to my users.

EDIT: "drop-in replacement like SQLite", not "for SQLite".

thechao··on He asked AI to count carbs 27000 times. It couldn't give the same answer twice
About once a week I ask ChatGPT to give me a reasonable diet for recomp with weight loss. It consistently insisted I have at least 7 meals consisting of at least 30g of protein per meal, but the protein source can't be whey or casein. When I ask "why" it cites a bunch of studies ... but most of those "studies" are N=1 of a college or Olympic level athlete. If, instead, I grab a large scale lateral analysis, it says "3 meals" with about 1/2 of the protein.

It'll defend both sides (mutually contradictory) to the death. NOTHING will budge it from its initial stance.

thechao··on Sabotaging projects by overthinking, scope creep, and structural diffing
Find a brand new hire who wants to get tenure. Getting a PhD through in 4 years is catnip for tenure at most universities (stateside). We then dropped off my dissertation in the middle of NSF funding week. I paid for it during orals (4 hours), but they all signed within a few days without comment.

Uhh... unless you plan to stay in academia? Then, this is a terrible idea.

thechao··on Isopods of the world
My youngest is 14, and she still brings them home. After it rains I'm "banned" from the front door because I'm "too clumsy". Future entomologists unite!
thechao··on The purist's guide to phở in Hanoi
I've been told my old stomping ground (Houston) is extremely competitive. I've not eaten Vietnamese outside of Texas, so I can't really compare. It was shocking to me, when I moved to Portland, OR, to not have easy access to pho, banh mi, and vermicelli dishes. They kinda make up for it with poke bowls?
thechao··on Wit, unker, Git: The lost medieval pronouns of English intimacy
Same here, frankly. I just didn't want to make an aggressive generalization that I couldn't support. I've got video of the usage from 2001.
thechao··on Wit, unker, Git: The lost medieval pronouns of English intimacy
You, y'all (small close group), y'all all (larger, further group), and "all y'all" — Southeast Texas (coastal) dialect form that showed up about 25 yrs ago. I suspect it might've been there all along, but only became acceptable at that point?

Another 100+ years, and this'll be some solid grammar.

thechao··on A blind man made it possible for others with low vision to build Lego sets
Why can't you vary the height of the posts on the top of the piece? Or, add some nubbins on the posts/surface: isn't that what braille is?
thechao··on The Claude Code Source Leak: fake tools, frustration regexes, undercover mode
You assemble all your machine code using a magnetized needle?
thechao··on Solar is winning the energy race
You're off by an order of magnitude. It's a few hundred watts; an EV is consuming 10s of kilowatts. (Ignore the watt-watt/hour sloppiness, pls.) To charge my car 60% would take about 2 months. Ambient needs (battery cooling) would eat up more than I'd get back. At best it extends idle sit time.
thechao··on Jury finds Meta liable in case over child sexual exploitation on its platforms
Once there's a pattern of abuse, you can go after the execs personally for purposes of the carrying out of justice. Courts don't like the idea of bad actors hiding themselves behind corporations. You don't even need to "piece the veil" — you just go straight for the Zuck.
thechao··on The 12" chef knife, a humble plea
Or the bottom of a coffee mug. Takes a bit of eyeballing to get it right the fist time, but sharpens up, good!
← PreviousPage 2 of 34Next →