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Learned about Analogic Modeling today thanks to Developer's Devotional. Never would have even thought to search something like this.
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Jacob Chappell
800 posts
Jacob Chappell
@phpHavok
Sr. Software Engineer w/ Master's in Computer Science. Hobbyist music producer. Building Developer's Devotional at https://t.co/tskIVeaNB2. ישוע חי
✝️✡️ Katılım Temmuz 2018
374 Takip Edilen92 Takipçiler
Guys, I told Claude to make no mistakes, and it made one anyway. What do I do now?
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@thdxr @neogoose_btw Bookmarked as a case study on good leadership
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Honestly it’s cool to see that there are companies where you can tell this kind of joke about your boss founder without any fear.
It’s literally the healthiest corporate culture. I’m kind of envy.
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Had a Jane Street interview in 2014
End of round 5. Interviewer says "round 6 will find you."
Three weeks. Nothing.
I'm in line at the Trader Joe's on 14th. Line snakes past the frozen aisle, the way it always does. I'm holding a bag of orange chicken and a four-pack of cold brew concentrate.
Guy in front of me is in a Patagonia vest over a quarter-zip. Not turning around. Inching his cart forward every 30 seconds.
Picks a box of something out of his own cart. Holds it up over his shoulder without turning around.
"Ant on a corner of this box. Walks to the opposite corner along edges. How many shortest paths."
"Six."
"Now in 4 dimensions."
I think. Tesseract. One edge per dimension, any order.
"4!. Twenty-four."
"Confidence."
"0.85."
"Correct on both counts."
Offer Monday. $69k base (which I'm told is a 'cultural fit discount'). No bonus. No equity. No relocation. They will, however, allow me to name one (1) colocated server in their NY4 cage.
I take my time. This is the only thing I'm being given.
I submit "Steve." Already a Steve.
I submit "Steve2." Discouraged naming pattern.
I submit "Steven." Confusing with Steve.
I submit "Big Steve." Big Steve exists in NY5.
I submit "my Steve."
Approved.
Two weeks into onboarding, IT pings the eng channel: "my Steve is down." Three engineers respond at once asking which Steve. The thread spirals. Someone clarifies: "it's named 'my Steve.'" Someone replies "yes but whose." A VP joins the thread: "is this a possessive or a proper noun." Nobody knows. A meeting is called.
The meeting is titled "re: my Steve." Nine engineers attend. The first ten minutes are spent establishing whether the meeting title refers to the server or to a Steve belonging to the meeting organizer. The meeting organizer is named Devesh. Devesh does not know a Steve.
Offer rescinded Friday. Reason listed in the email as: "Introduced ambiguity into production naming taxonomy. Unrecoverable."
I'm no longer allowed in the building. I am also, somehow, no longer allowed in the Trader Joe's on 14th. The doors don't open for me. I have tested this six times. The orange chicken is still in there. Three bags deep on the shelf, frozen, waiting. I think about it every day.
Deedy@deedydas
Jane Street made ~$40B in 2025 with 3,500 employees, a ~2x from the year before. At ~65-70% profit margin, that's $8M profit / employee, the highest for a 1000+ ppl company. High-frequency trading continues to be the most efficient money making engine. I want to share an old story about my Jane Street interview in 2014. Jane Street was known for hiring a lot of math, physics and CS olympiad winners from top universities and putting them through many rounds - including, for trading roles, a gauntlet of mental math. It was my 6th interview and my final round and I recall being asked "What is the next day after today in DD/MM/YYYY where all the digits are unique?" They'd toy with you and say "You can use a pencil and paper, if you want" but you knew that was an instant no. Painstakingly and as quickly as I could, I came to an answer. "How confident are you that this is correct on a 0-1 probability scale?" the interviewer said. "0.95", I blurted out, not fully knowing how to answer that. "Are you sure?" After thinking harder for a few more seconds, I realized I could've flipped the digits around to get a closer date. I gave the interviewer my answer. It was correct. "0.95 huh?" he chuckled. That's when I knew I failed. Note: fwiw, other companies that come close in efficiency are - Tether ($90M+ profit/emp) - Hyperliquid ($80M+ profit/emp) and on revenue: - Valve ($50M/emp) - OnlyFans ($37M/emp) - Craigslist ($14M/emp) - Anthropic ($12M/emp, run rate) - OpenAI ($8M/emp, run rate) For comparison, Nvidia is very efficient at scale and is $4.4M/emp.
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@ThePrimeagen Dario my hero will save me though in my time of distress
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By 2027 Dario will claim it's too dangerous to have humans hand produce code
And guess who's product is selling the shovel?
AI Edge@aiedge_
Anthropic CEO (Dario Amodei): "Coding is going away first, then all of software engineering." What do you think about this?
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Just need to subscribe to one more newsletter bro, then I'll finally have knowledge.
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I see. How many of you do this? I’d like to get a sense of how common this is.
Cristian@iamthatcris
the first thing I do when I install @shadcn is to add cursor pointer on the button
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We got Fortune posting on X before GTA 6 🫠
Nikita Bier@nikitabier
@FortuneMagazine Media companies publishing Articles on X 🥹 we’ve won
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@rakyll Sounds pretty cool. I have nostalgia for early 2000s Google. What other places encourage novel research now?
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Google is one of the few institutions in the world where working on foundational new computer science problems is still encouraged.
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@housecor I'm envious of that run time. My JVM projects take that long to run a single hello world test lol.
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The acceleration from AI is unbelievable.
After *only 5 weeks* of development on a new project with 4 devs, we have over 4,000 tests.
That's ~200 tests per dev/week!
Absolutely no way we could've done this by hand.
Vitest runs them all in under 15 seconds on my M1 Mac.
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@deedydas It's a transformation for sure. Not sure how incredible it is though.
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@aarondfrancis You'll also have to make sure they are the same color per child, physical properties, and all uniformly distributed random numbers favor each child in isolation while simultaneously somehow not disadvantaging the other. Ask me how I know 😂
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If you have two-year-olds or four-year-olds, this is the best deal goin
Make sure you buy one per child, ask me how I know
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As the head of business, I did the math on this
As long as everyone on the OpenCode team skips Starbucks every morning for the next 100,000 years we can do this
great opportunity
OpenCode@opencode
help us solve a debate should we 3x the kimi k2.6 limits on opencode go or nah
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Left Germany last year.
Still can’t comprehend that I need to send them worth of new Tesla in taxes just to pay off the fact that I lived there 9 months.
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I don't buy all the claims Anthropic makes, but one thing I must say is that Boris Cherny has a stellar way of interacting with customers. He replies to criticism with an open hand, and I've never seen him express anger at a customer. Something for us all to learn.
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