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Writes Pedestrian Observations on public transit and why infrastructure costs what it does; a pure mathematician by training, comparing how different countries build.

• Our readingkorrents.com

  Rich regions having noticeably higher life expectancy than their national average is a common pattern even under universal healthcare, not a US-specific phenomenon.

  Europe

  Their words

  And yet, life expectancy about two years more than the national average is rather common in rich regions with selective migration, even in European countries with even access to health care, like France and Spain.

  pedestrianobservations.com

Professor of psychology at UCLA, where he studies human memory, attention and cognitive ageing, and author of Better with Age: The Psychology of Successful Aging.

• Our readingkorrents.com

  Older adults are not worse rememberers so much as more selective ones: they keep what they were curious about and let the rest go.

  Their words

  And so, in this study on curiosity, we found that older adults tend to remember the things that they're most curious about, but they're also really good at forgetting the things that they just didn't care about in the first place.

  youtube.com

Writes Very Serious, a newsletter on politics, the economy and culture, and hosts the podcast of the same name.

• Our readingkorrents.com

  Having worked at a highly selective, demanding employer signals conscientiousness and reliability.

  Their words

  Having worked there is a signal that you work hard, you complete your assignments, you adapt well to new tasks and requirements, and you're ready to take on new challenges.

  joshbarro.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.

• Our readingkorrents.com

  There was no genetic switch for behavioural modernity: no selective sweep is shared by everyone alive today in the period the cognitive revolution supposedly happened.

  Their words

  This is like a crazy result because uh it looks like there's no key selective sweeps that have occurred in this period that is ancestral to everyone living today.

  youtube.com

Creator of Ruby on Rails, CTO of 37signals, and creator of Omarchy.

• Our reading nowkorrents.com

  Basecamp was the best business idea he will ever have: lightning is not caught twice, and a founder's second idea is rarely as good as the first.

  Their words, before

  I know this from experience because I've been trying to build a lot of other businesses since. And some of them have been moderate successes, even good successes, none of them have been Basecamp. It's really difficult to do that twice.

  Their words now

  And I have no shame in saying that Base Camp was the best idea objectively in terms of a business that we've ever had.

Writer of MacSparky and author of the MacSparky Field Guides on Apple productivity software. A lawyer for 30 years before going full-time on the site, he co-hosts the Mac Power Users and Focused podcasts.

• Mixed onrcmnd.app

  Superhuman

  Their words

  I can say without a doubt that Superhuman is the best tool I’ve ever used to work through email quickly. There’s no single reason. The keyboard shortcuts are lightning fast. The composition tools avoid friction. Its auto-sorting is excellent. I’m just scratching the surface of the full feature set. But Superhuman comes with a significant cost at $30 a month.

  macsparky.com

German writer and historian; wrote Blitzed, on drug use in Nazi Germany, and Tripped.

• Our readingkorrents.com

  The German war machine could only ever win lightning wars, because it was always the weaker side.

  Their words

  And the German war machine could only win in so-called speed wars, like lightning war. Only if they would do it very fast and surprise, because they were always weaker, basically.

  youtube.com

Co-founder and CEO of Stripe and co-founder of the Arc Institute. Keeps a personal site of reading lists, open questions and notes on scientific progress and how research is funded.

• Lovedrcmnd.app

  Dealers of Lightning

  Their words

  Dealers of Lightning -- the best history of PARC.

  patrickcollison.com

Neuroscientist at UC Davis; studies memory and wrote Why We Remember.

• Our readingkorrents.com

  Nostalgia is a selective reading of the past — useful when it makes you happy now, toxic when it narrows what you can see of the present.

  Their words

  It’s just this idea that people have about the past can be very useful if it brings you happiness in the present, but if it narrows your worldview in the present, you’re not aware of those biases that you have, it can be toxic either at a personal level or at a collective level.

  youtube.com

Theoretical physicist and philosopher, Homewood Professor of Natural Philosophy at Johns Hopkins and fractal faculty at the Santa Fe Institute. Writes the Preposterous Universe blog and hosts the Mindscape podcast.

• Our readingkorrents.com

  A great filter is a weak explanation for the silence, because it would have to work every single time — one civilization with self-replicating probes could fill the galaxy.

  Their words

  That is absolutely possible. I’m actually putting less credence on that one just because you need to happen every single time. If even one, I mean, this goes back to John von Neumann pointed out that you don’t need to send the aliens around the galaxy. You can build self-reproducing probes and send them around the galaxy.

  youtube.com