ai things @_hex_tech // prev @ramp @uber. amateur musician. tweets are my own bayesian opinions.
San Francisco, CA
Joined October 2012
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ravit retweeted
"a + b", this one line of Python code executes thousands of lines of C behind the scenes. My latest article explains what goes on in the CPython runtime to execute this seemingly simple operation. You will learn about:
- Dynamic dispatch implementation in CPython
- What is the abstract object interface in CPython and its role in dynamic dispatch
- What is the PyTypeObject struct and its role in the CPython runtime
- How the various types in CPython implement operators and make them available to the runtime for dynamic dispatch to work.
- And, look inside the implementation of the float type to understand this more concretely.
The article includes 13 annotated code listings from CPython with all the explanations. Check it out: open.techwriters.info/codeco…
ravit retweeted
BIG TRANSIT FUNDING UPDATE
Last night, the Senate & Assembly released our budget, including most of the agreement on transit. We vote on Thursday.
The agreement is a strong step to address the transit operations fiscal cliff. More work remains, but this is good progress.🧵⬇️
ravit retweeted
My favorite econ paper correlated the unpaid parking tickets of UN diplomats in NYC with the UN corruption index. They have diplomatic immunity so don't need to pay the tickets, but people from low corruption countries paid anyways.
ravit retweeted
It's a legit concern for anyone coming in. If history holds, he'll micromanage certain things -- or swoop in with sudden demands/ideas -- while also giving broad latitude on other things.
ravit retweeted
SCOOP: Net energy gain in a fusion reaction has been a holy grail in science for decades. Now I’m told US scientists have done it. A massive breakthrough with revolutionary potential for clean power. US Energy Secretary to hold a press conference Tuesday on.ft.com/3PgDdya
ravit retweeted
I wrote about the new anti-obesity drugs—semaglutide (Wegovy) and tirzepatide (Mounjaro)—that represent one of the most important breakthroughs in medicine
erictopol.substack.com/p/the…
ravit retweeted
Some events that took place in the same time in history but don’t seem like they would have:
“1971: The year in which America drove a lunar buggy on the moon and Switzerland gave women the vote”
ravit retweeted
Dear Apple I am not able to keep track of and get back to conversations across 10 apps. Needs some OS-level help to sort notifications into fyis and todos that you can sort through, mark as “unread” and deal with when you’re able. Sad as the concept is.
ravit retweeted
Last week I visited a half-dozen hardware companies throughout the western US, with a heavy climatetech bent. It solidified previous impressions I had into reality. While all very different, a 🧵 of some patterns across them, covering policy, geopolitics, and teams:
ravit retweeted
Liberalism cannot succeed if it cannot build. The world does not stay the same. Our institutions can't, either.
ravit retweeted
Superpumped Episode 1: low on accuracy if you're looking for the true story of Uber, but as far as fictionalization story arcs go I'm enjoying it – at California, USA
ravit retweeted
there are a lot of bad ukraine takes but pointing out that many ukrainians speak russian, and ukraine is therefore basically already russia, is honestly next level for an american. folks we speak ENGLISH.
ravit retweeted
Ameerpet is such a unique and beautiful thing. Like the beating heart of a country’s attempt to skip straight to a post-industrial economy. The world is weird!
ravit retweeted
there are of course many interpretations and sects of understanding in the modern world.
i’ve personally found vimalaramsi’s to be both approachable and intuitive.
he focuses more observation than concentration on specific sensations.
youtu.be/V2Kbd9zschM
ravit retweeted
1/In today's Substack post, I respond to Scott Alexander about Jewish achievement.
In addition to addressing his points, I also add a section asking: "Why might we care about Jewish achievement?"
I could think of 4 reasons...
noahpinion.substack.com/p/a-…