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Writes The Diff, a newsletter on inflections in finance and tech read by hedge fund managers, founders and VCs. Previously worked in finance at SAC Capital/Point72.

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  Time spent on bureaucratic paperwork is a real economic cost even though it doesn't appear in government budgets.

  government

  Their words

  it is simply ridiculous that a ruinously expensive policy can be budget-neutral if the expense consists of wasted time rather than wasted money. But that's still a cost!

  Longreads + Open Threadthediff.co

Co-founder and CEO of Shopify; long-time Linux user and Omarchy contributor.

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  If Canada is strong, sovereign, hard-working, deeply competent, and finishes ambitious infrastructure on budget and on time, every other problem melts away.

  energy

  Their words

  The best way is to be strong, sovereign, hard-working and deeply competent. Ideally with an uncanny ability to start ambitious infrastructure projects and finish them on budget and on time. Shout-out to our nuclear energy sector for nailing that. Do that and every other problem melts away.

  @tobi on Xx.com

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).

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  Looped/recurrent-depth transformer architectures can improve model quality at a fixed compute budget when the model is large enough.

  Their words

  So, in short, we can say that using looped transformers can improve model quality at a fixed compute budget if the model is large enough.

  magazine.sebastianraschka.com

Programmer; makes Handmade Hero and teaches Performance-Aware Programming, and argues loudly about how software got slow.

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  A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen.

  Their words

  300 milliseconds is like an eternity in computing, right? And so if you're talking about like our pitch is that we're not more than 300 milliseconds, that just shows you how the bar was so far past where it probably should have been for something.

  youtube.com

Co-founded Neuralink and founded Science Corp, which is building a retinal implant; writes about neural interfaces and biology.

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  Approving purchases one at a time is the wrong place to control burn; spending review belongs earlier, in a budget people can make their own trade-offs inside.

  Their words

  And so what you realize is not only is this very hard to keep burn under control, but also it's just this is the inappropriate place to exercise spending review. Spending review has to come earlier. You have to have some concept of budgeting.

  Max Hodak: Average Is Not Good Enoughyoutube.com

Chief product officer at the live-shopping marketplace Whatnot, previously chief product officer at Twitch and a product lead on growth at Twitter.

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  Interviews reward presentation; only a hands-on case study shows how fast a candidate's thinking decays.

  Their words

  the number of people who present incredibly well, and then you give them a prompt and some data and ask them to come back with a PRD on something, and then we make them verbally defend it, how quickly the thinking decays from folks who are good at the theater, but not the specifics, uh is kind of really telling, I think.

  youtube.com

Chief Product and Technology Officer at Netflix, previously VP of Science at Lyft and an economist at Analysis Group.

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  Candidates should be allowed to use AI tools in a coding interview, because that is what the work now requires.

  Their words

  And even for things like coding interviews, allowing candidates, of course, to use AI tools because that's going to be part of what the work requires now.

  youtube.com

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  Pushing an LLM's reasoning budget higher eventually yields diminishing returns and becomes uneconomical.

  LLMs

  Their words

  This saturation can be seen more clearly for the GPT 5.6 Sol model, which also shows that increasing reasoning budgets can become uneconomical at some point.

  Controlling Reasoning Effort in LLMsmagazine.sebastianraschka.com

Founder of HumanLayer; wrote 12-Factor Agents, on how to build AI agents that hold up in production.

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  Context has two budgets, not one: the information budget everyone thinks about, and an instruction budget, where conflicting instructions cost the model real computation to ignore.

  Their words

  But it's also your instruction budget is like if you give the model too many instructions and especially too many conflicting instructions and that's in your initial prompt and also like if you have a conversation you start going down a path and then you change your mind and you start going down a different you actually I don't want to do any of that I want to do this. It's like a it's a lot of computation the model has to do to notice that it has to ignore that whole thing.

  Context engineering with Dex Horthyyoutube.com

Investing columnist for The Wall Street Journal and editor of the revised edition of Benjamin Graham's The Intelligent Investor.

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  Behavioral economics is not a cure-all, but it is a useful tool for individuals and for systemic change alike.

  Their words

  My view: Behavioral economics is no panacea, but it can be an extremely useful tool for individuals and for systems as well.

  Some Summer Readingjasonzweig.com

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  The Madness of Markets

  Their words

  Edmans summarizes the field of behavioral finance research with a refreshingly light touch.

  jasonzweig.com

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  Money and Me

  Their words

  In simple, crystalline prose, Clements shares a lifetime of wisdom on using money to buy happiness, counteracting the behavioral quirks that bedevil our financial decisions, and making family and friends an integral part of our wealth.

  jasonzweig.com

AI researcher at OpenAI; built the poker systems Libratus and Pluribus and the Diplomacy agent Cicero, and works on reasoning models.

From one piece Really Big Test-Time Compute in AI Changes Benchmarks, Safety and Research with OpenAI's Noam Brown 2 beliefs, in the piece's order there

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  A model's capability is now a function of how much money you spend on it, so asking what a model can do means nothing until you name a budget.

  Their words

  The problem is we're in a world now where the capability of the model is a function of how much money you put into it. Basically, if you give it a budget of $10,000, it can do a lot more than what it can do with a budget of $10. Give it a budget of $10 million, you can do even more. At what budget should you evaluate these models? The policies that exist today don't really address that question.

  youtube.com

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  A benchmark result should be reported under a stated budget, or as a curve against test-time compute — never as a single number.

  benchmarks

  Their words

  my claim is the proper way to evaluate the models now is you either have some kind of budget for the benchmark whether it's tokens or cost or time or whatever or you plot the performance as a function of the amount of test time compute that's going into the model

  youtube.com

Makes NeetCode, the structured practice list and video walkthroughs people use to prepare for coding interviews; a former Google engineer.

From one piece Tech interviews with NeetCode 3 beliefs, in the piece's order there

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  The data-structures-and-algorithms interview never tested a skill that transfers to the job; what it tested was whether somebody can think.

  Their words

  And DSA interviews were never the best for that. Well, thinking, sure. But in terms of like does that skill translate to what you're doing on the job? It never really translated to that. It was more about evaluating like does somebody think?

  Tech interviews with NeetCodeyoutube.com

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  The right way to hire is not four rounds of data structures and algorithms but work like the job, plus asking a candidate why they made each choice.

  Their words

  I'm not going to spend four interviews going through and asking somebody data structures and algorithm stuff. I just have them do work that might be similar to something I'd give them on the job or even just have a conversation with them. See how they think. Like can they think through trade-offs? I don't even care about what answer they give me to a problem. I care about like what's like why did they say that?

  Tech interviews with NeetCodeyoutube.com

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  Cheating tools have pushed Google back to in-person interviews, where somebody watches you code and you cannot cheat your way through it.

  Google

  Their words

  I think Google has pretty much gone to on-sites at this point, back to the traditional whiteboard format. And they'll let you code on a laptop if you want to, as well, but it's going to be in person. Somebody's going to be watching you code, and you're probably not going to be able to cheat your way through that.

  Tech interviews with NeetCodeyoutube.com

Geneticist at Harvard; reads ancient DNA to work out how populations moved and mixed, and wrote Who We Are and How We Got Here.

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  The weak selection signal on behavioural traits is a shortage of statistical power, not evidence that behaviour was unselected.

  Their words

  It may still be the case, and I guess it is, that immune traits are the most selected category, but is not at all the case, and in fact, we can prove it's not the case that behavioral traits are not selected.

  youtube.com

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  Constitutional limits on policing are not policy preferences to be traded away in a budget negotiation.

  Their words

  And that risks giving the impression that basic constitutional rights and restraints on police and executive power that date back to the Founding are, actually, negotiable.

  radleybalko.substack.com

Founder of WP Engine and Smart Bear; writes A Smart Bear, long essays on strategy, pricing and how startups actually fail.

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  A cancelling customer already survived an improbable gauntlet to buy, which makes churn an emotional emergency before it is ever a metric.

  Their words

  They actually had the budget and bought the stupid thing. Then they went through onboarding and invested their time etc etc. That is a crazy gauntlet that almost no one gets through.

  youtube.com

Organizational psychologist and professor at the Wharton School. Author of Give and Take, Originals, Think Again and Hidden Potential, host of the Re:Thinking podcast, and writer of the GRANTED newsletter.

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  Revealing

  Their words

  Revealing by behavioral scientist Leslie John (February)

  adamgrant.substack.com

Vice chairman of Ogilvy & Mather Group, the advertising agency; author of Alchemy (2019) and the Wiki Man columnist at The Spectator.

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  Companies would often be better off moving a tenth to a fifth of their marketing budget into paying call centre staff properly.

  Their words

  probably 50% of the time, I would advise to a client, take 10 to 20% of your marketing budget and spend it on upgrading the call center. Pay the people too much. Get the best practitioners.

  youtube.com

Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.

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  China Talk

  Their words

  When this is good and on point, it is very, very good, and provides essential perspective I couldn’t have found elsewhere, especially when doing key interviews.

  thezvi.substack.com

Economist at the Hoover Institution; wrote The Fiscal Theory of the Price Level and blogs as The Grumpy Economist.

• Our readingkorrents.com

  Cutting off trade with tariffs would force a huge interest-rate spike and probably a debt crisis, because the budget deficit would have to be financed at home.

  interest rates

  Their words

  But the spike in interest rates require to do this would be huge. And the trade shock will cause a sharp recession, or worse, putting even more stress on the budget. A debt crisis is likely along the way as the US finds it impossible to roll over debt.

  Tariffs, saving, and investmentgrumpy-economist.com

Pen name of the Canadian-American writer behind mrmoneymustache.com, a blog on frugality, early retirement and index-fund investing that has run since 2011.

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  You Need a Budget (YNAB)

  Their words

  You Need a Budget (YNAB) is a simple to use (but sophisticated under the hood) bit of budgeting software that uses the principles of human habits and behavioral finance to make you more conscious and efficient in your spending.

  mrmoneymustache.com

Co-founder and CTO of Honeycomb; previously an infrastructure engineer at Parse, Facebook and Linden Lab, and co-author of Observability Engineering.

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  Reference checks are more informative than interviews, and if you had to pick one you should pick references.

  Their words

  I’ve said many times that if I had to choose between interviews or references, I would pick references every time.

  “Founder Mode” and the Art of Mythmakingcharity.wtf

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  Cracking the Coding Interview

  Their words

  a classic to prepare for the data structures and algorithms interviews.

  blog.pragmaticengineer.com

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  NASA's flagship programmes eat the budget of the robotic science missions that actually make the discoveries.

  Their words

  SLS, like JWST before it, eats everything in its path, meanwhile NASA hasn’t sent a single mission to Venus since 1989.

  SLS is still a national disgracecaseyhandmer.wordpress.com

Coffee consultant and author of books on espresso, roasting and brewing, including The Professional Barista's Handbook and The Coffee Roaster's Companion; writes about brewing gear and roast control at scottrao.com.

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  Niche Zero

  Their words

  High quality, budget grinders were rare at the time. The Niche Zero and other new grinders changed that, and helped make it easier to pull good shots.

  scottrao.com

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  Canceling government bonds held by a central bank creates no fiscal space, because the reduction in government interest payments is exactly offset by an equal reduction in the profits the central bank remits to the government.

  interest ratesgovernment

  Their words

  The proposition is that the cancellation of the bonds held by the central bank would decrease the amount of interest payments and thus the debt service of governments. And indeed, it would. But it would have another effect—namely, to decrease the revenues of the central bank and thus the profits that the central bank turns in to the government. This second effect would be exactly of the same size as the first, and the net effect on the government budget constraint would be equal to zero.

  Fiscal Policy under Low Interest Ratesdirect.mit.edu

Reviews sports technology at DC Rainmaker — watches, power meters and bike computers — in exhaustive detail, having tested them himself.

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  Polar Vantage M2

  Their words

  In some ways, it’s really a disservice to assume that because these are budget options that they’re somehow bad.

  dcrainmaker.com

American author of The Subtle Art of Not Giving a F*ck and Everything Is F*cked. Writes essays and book reviews at markmanson.net.

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  Thinking, Fast and Slow

  Their words

  Still the definitive book on cognitive biases and behavioral economics.

  markmanson.net

Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.

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  Numberphile

  Their words

  I'm guessing if you're here, you already know about Numberphile. If somehow you don't, it's a great channel full of interviews with mathematicians.

  3blue1brown.com

Full-stack developer, creator of Tailwind CSS; writes at adamwathan.me and makes courses and screencasts for web developers.

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  Calendly

  Their words

  I use Calendly to schedule podcast interviews and other meetings. So much nicer than trying to work out a time to chat by going back and forth in an email thread.

  adamwathan.me

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  Audio Hijack Pro

  Their words

  I use this to record all of my podcast interviews. Fantastic software, highly recommended.

  adamwathan.me

Co-founder, chairman and chief investment officer of Ritholtz Wealth Management. Hosts the Masters in Business podcast for Bloomberg and wrote How NOT to Invest.

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  Alchemy: The Dark Art and Curious Science of Creating Magic in Brands, Business, and Life

  Their words

  Rory Sutherland, Alchemy: The Dark Art and Curious Science of Creating Magic in Brands, Business, and Life: Rory Sutherland is the Vice Chairman of advertising giant Ogilvy; he describes his “attractively vague job title” as allowing him the freedom to create a behavioral science practice within the ad agency. This looks intriguing.

  ritholtz.com

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.

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  A Man on the Moon: The Voyages of the Apollo Astronauts

  Their words

  It's a solid, well-sourced ("based on hundreds of hours of in-depth interviews with each of the twenty-four moon voyagers, as well as those who contributed their brain power, training and teamwork on Earth"), general overview of the heart of the Apollo program. Also an excellent entry point.

  blog.nelhage.com

Former options market maker who writes Moontower, a newsletter on trading, volatility, decision-making and how to think about risk outside markets too.

• Usesrcmnd.app

  Odd Lots

  Their words

  Regular Rotation Investing Focused Interviews The Meb Faber Show Master in Business with Barry Ritholz Capital Allocators with Ted Seides Bloomberg’s Odd Lots with Tracy Alloway and Joe Weisenthal

  moontowermeta.com

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  Masters in Business

  Their words

  Regular Rotation Investing Focused Interviews The Meb Faber Show Master in Business with Barry Ritholz Capital Allocators with Ted Seides Bloomberg’s Odd Lots with Tracy Alloway and Joe Weisenthal

  moontowermeta.com

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  EconTalk

  Their words

  Economics or Business Interviews Conversations with Tyler with Tyler Cowen EconTalk with Russ Roberts General Interviews North Star Podcast with Dave Perell The Tim Ferriss Show

  moontowermeta.com

+ 2 more

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  Conversations with Tyler

  Their words

  Economics or Business Interviews Conversations with Tyler with Tyler Cowen EconTalk with Russ Roberts General Interviews North Star Podcast with Dave Perell The Tim Ferriss Show

  moontowermeta.com

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  The Tim Ferriss Show

  Their words

  Economics or Business Interviews Conversations with Tyler with Tyler Cowen EconTalk with Russ Roberts General Interviews North Star Podcast with Dave Perell The Tim Ferriss Show

  moontowermeta.com

Canadian bootstrapper and writer on small software businesses. Co-founder of the podcast hosting company Transistor.fm and author of the book Marketing for Developers.

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  ScreenFlow

  Their words

  ScreenFlow - I believe the future of my business is in video + video courses. I'm in ScreenFlow almost every day. Sometimes I use it to "hijack audio" during interviews. Sometimes I use it to edit video. It's getting a lot of use.

  justinjackson.ca

Economist; Professor of the Practice of Economic Policy at Harvard, nonresident senior fellow at the Peterson Institute, and Chairman of the US Council of Economic Advisers from 2013 to 2017.

From one piece Applying Behavioral Sciences in the Service of Four Major Economic Problems 2 beliefs, in the piece's order there

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  Integration of behavioral science into public policy has so far proceeded from available tools toward problems rather than the reverse.

  Their words

  But to date, the integration of behavioral science into public policy has proceeded from developing a set of tools to then searching for problems these tools can help solve.

  doi.org

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  Behavioral science can matter more in policymaking if practitioners start from large-scale economic questions and develop complementary insights.

  Their words

  Behavioral science can play an even more important role in the policymaking process in coming years if practitioners instead begin with some of the large-scale questions that economic policymakers face and then develop insights that, often as a complement to more traditional policy tools, can help solve them.

  doi.org