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Sebastian Raschka
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macos-pdf-splitter — Native macOS app for splitting and converting PDF figures
splitting converting figures
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20 September
Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.
Philosophy professor at UC Berkeley and creator of pandoc, the universal document converter, and of the CommonMark markdown specification.
16 September
Writer and academic, author of The Cult of Smart and How Elites Ate the Social Justice Movement; writes a daily newsletter on politics, education and culture.
11 September
Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.
9 September
AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).
I put together a mega write-up on GPT-6 Astra & looped transformers. How looped transformers / recurrent depth works, cost-tradeoffs, whether it hides reasoning traces, with lots of figures and a tour of recent looped transformer research. Related
6 September
Designer and technologist; author of The Laws of Simplicity; former president of the Rhode Island School of Design; formerly at the MIT Media Lab.
DRAWING IS THINKING: The Bauhaus ▲⏹⏺ has always haunted me. A day of drawing (w/o the help of LLMs) helped me see that most everything to do with design can be encapsulated into those forms. The ▲ holds the essence of effective design; the ⏹ holds the shape of product simplicity; the ⏺ holds the winding cycle of the infinite journey. I'll elaborate on these figures in the 2027 https://t.co/0Y1PdIFenb —JM LLMs Related
5 September
Mathematician at UCLA, working mainly in harmonic analysis and partial differential equations. Writes What's new, a long-running blog on their research, open problems and expository notes.
An elaboration of the previous post mentioning the bounded gaps between primes problem as an illustration of the opportunity cost of converting a fruitful problem such as this solely into a competitive benchmark. [Indeed, as I point out below, this already came close to happening back in 2013.] As with most other problems worth studying in pure mathematics, the particular bound one gets on these gaps is not of much intrinsic importance. Improving Zhang's bound of 70 million, to 246, 188, or 6 would not, in itself, have significant impact on any other mathematical problem, let alone any real-w… benchmarks Related
1 September
Writer of the personal-finance blog Of Dollars And Data and author of Just Keep Buying and The Wealth Ladder. Chief Operating Officer at Ritholtz Wealth Management.
27 August
Software engineer, Wikipedia editor and crypto critic; writes Citation Needed and runs Web3 is Going Just Great.
there should be a term for the specific psychosis that kicks in once a tech founder's net worth hits ten figures and he starts talking about AMH levels Related
9 August
Writer and former Substack product manager; publishes essays and interviews on technology, culture and China at jasmi.news.
13 July
Writes Very Serious, a newsletter on politics, the economy and culture, and hosts the podcast of the same name.
Their words
After all, one of the main reasons bad boys are bad is that they lie.
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joshbarro.com
17 June
Bootstrapper and investor. Founder of TinySeed and MicroConf, host of the Startups for the Rest of Us podcast, and author of several books on self-funded software startups.
I’m invested in 241 companies and have yet to see a successful startup get there by hiring a growth hacker. Growth is the responsibility of the founder(s) in every one of the dozens of @tinyseedfund companies growing quickly and doing 7 or 8-figures of ARR. Quoting @andruyeung After investing in 20+ companies, the most impactful first hire I've seen a founder make is a growth hacker type person who can figure out distribution. B2B: linkedin, events, AI outbound, AEO, blogs, long form writing, YouTube, webinars, X, influencers B2C: AI UGC, organic TikTok, paid social, eve… startups Related
6 June
Bootstrapper and investor. Founder of TinySeed and MicroConf, host of the Startups for the Rest of Us podcast, and author of several books on self-funded software startups.
Across the 241 SaaS companies I'm invested in, less than 5% had any notable social media audience when they started (or have built one since). As a data point, about 22% of them are doing 7 or 8-figures of ARR. If you want to do SaaS, build your network, not your audience. Quoting @Shpigford real talk: having a decent sized audience *helps* but is by absolutely zero means a guarantee that anything succeeds/works/makes money. have put out TONS of things that got all of about 3 people to actually sign up for. SaaS Related
15 May
Statistician and software engineer who writes R packages for reproducible research and publishing, including knitr, bookdown and blogdown.
Converting testthat Tests to testit Back in 2013, I wrote about testing R packages when I first released testit. Thirteen years later, I still believe that unit testing should be nothing more than “tell me if something unexpected happened.” Re…
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21 April
Free software developer; maintainer of sway, wlroots, aerc and scdoc, and founder of the SourceHut (sr.ht) software forge.
23 March
American novelist and critic, author of Real Life, The Late Americans and Minor Black Figures; writes the newsletter sweater weather on literature and culture.
1 January
Writer and researcher on China, technology and industry; author of Breakneck, research fellow at Stanford, known for a widely read annual letter.
Their words
1913: The Year Before the Storm presents a whimsical slice of Central Europe. Art historian Florian Illies collates fragments of leading figures month by month, diary-entry style.
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danwang.co
26 December 2025
Software engineer at PlanetScale and creator of the vim-go plugin. Writes at arslan.io about Go, tooling, industrial design and books.
Their words
Another favorite of 2025. The author traces the evolution of notebooks, from wax tablets and parchment to paper, and examines how figures like Leonardo, Darwin, and Newton used them to develop ideas.
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arslan.io
13 October 2025
Freelance research analyst and writer of the blog Aceso Under Glass, known for 'epistemic spot checks' of non-fiction claims.
energy
Their words
In general your body would rather use glycogen than fat, because glycogen loses almost no energy in the conversion from and to sugar and fat loses a lot.
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acesounderglass.com
5 October 2025
American senior staff engineer working on developer and user experience and open source; writes at adamdehaven.com.
Nothing as humbling as using the gym at a hotel in Europe and converting pounds to kilograms 😅 Doesn’t help I’ve been traveling for almost 4 weeks straight Budapest // Colorado // Spain Europe Related
2 September 2025
Technology analyst whose weekly email on tech reaches over 150,000 readers. Publishes essays and an annual presentation on where the industry is going.
Their words
It's like something around 10% give or take three or four percent of people depending on the survey are using this say they're using this every day. Another sort of 15 to 20% of people say they're using it every week.
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youtube.com
14 June 2025
Mathematician at UCLA, working mainly in harmonic analysis and partial differential equations. Writes What's new, a long-running blog on their research, open problems and expository notes.
Their words
Very rarely do you transform into a simpler problem. So if they can pick up a sense of smell, then they could maybe start competing with a human level of mathematicians.
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youtube.com
31 March 2025
Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.
16 March 2025
Founder of the toy manufacturer Viahart; writes about manufacturing, importing and why bringing production back to America is harder than it sounds.
12 March 2025
Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.
3 February 2025
Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.
Their words
The short-term that company that could make the most money is the one that figures out what advertising targeting method works for language model generations.
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youtube.com
18 March 2024
Web standards author and speaker; wrote the CSS: The Definitive Guide series and co-founded the An Event Apart conference.
7 September 2022
Biochemist at University College London; writes about the origin of life and the role of energy in evolution, in The Vital Question and Transformer.
Their words
So, how did they do that? You may as well say that a miracle happened. I don’t believe in soup. I think what we have in a vent is a continuous conversion, a continuous growth, a continuous reaction, a continuous converting a flow of molecules into more of yourself, you might say, even if it’s a small bit.
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youtube.com
12 September 2021
Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.
Celebrities are easy targets for moral policing—and not necessarily the most egregious capitalists—but it’s distinctly American that we rarely target them for greed. This week I wrote about public figures who sell their fans’ attention to brands. haleynahman.substack.com
America Related
8 April 2019
Software engineer who writes the blog Made of Bugs about performance, debugging and understanding computer systems. Previously worked at Anthropic on interpretability, at Stripe on Sorbet, and at Ksplice.
Their words
The book and movie only tangentially touch on Apollo itself (although it does appear!), but they make the list because they are well worth the read / watch, and they tell an important story of yet another facet of the immense collaboration that was the space program, and the incredible diversity of people and backgrounds and stories and kinds of work that went into making it all work.
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blog.nelhage.com
5 June 2018
Financial journalist; chief financial correspondent at Axios and host of the Slate Money podcast, previously a blogger at Reuters and author of The Phoenix Economy.
Nothing matches. Show everything
A korrent is a belief a person has stated in their own words: one
sentence stating the claim, backed by a quote and a source, kept at
korrents.com .
Under a name here, the quoted block is what they actually said.
The korrent beneath it is the claim those words support, in
korrents' wording — tap it to see the record, its source, and who
else holds it.
Nobody here wrote their own korrents. They are compiled from public
statements, and a person can change their mind, which is recorded too.
Got it
About the English under a post
Some people here publish in a language other than English. Where they
do, this site shows a machine translation beneath the post, in
this typeface — the site's own, not theirs.
The post itself is never changed, moved or hidden: what is set in the
serif above is exactly what the person published, and it is what to
quote them on. A translation can be wrong in ways that matter,
especially about tone.
Only the post's own words are translated. A quoted post, a linked
article and a belief on korrents.com
are left in their original language.
Got it