
Making rational optimism cool
| Platform | Pricing | Only free issues | Publishes | Twice weekly | |
|---|---|---|---|---|---|
| Issues | 223 | Founded | a year ago | Last Issue | 7 days ago |
| Active | |||||

Just south of LA International Airport in a former Beyond Meat warehouse, we visited a company making drugs in space.
Its drug factory fits in a cone-shaped capsule no bigger than a trash can. Inside it, drug crystals grow more perfectly i...
Agatha Christie once remarked that she had never expected to grow rich enough to own a car or poor enough not to have servants. The reason this strikes us as bizarre today boils down to two names that you hear invoked a lot in the tech indu...
Dear Rational Optimist,
Most AI pessimism boils down to the same assumption: eventually there will be “one AI to rule them all,” and it’ll need to be controlled.
But as evolutionary biologist and original Rational Optimist Matt Ridley poi...
In today’s Diary:
Nature’s steam engine switches on
Robot otters will deliver your food
Where nuclear waste disappears forever
The chokepoint no one’s guarding
A submarine for solid rock
Hey Rational Optimist,...
Dear Rational Optimist,
In December 2015 a rocket booster the size of a 15-story building dropped back from the edge of space, fired its engines, and landed upright on a Florida launchpad.
Rocket scientists had called this impossible for...
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The writers behind this newsletter.
Rational Optimist Society - Founder
Founder Rational Optimist Society and RiskHedge Research. Reformed cynic.
Welcome to the Rational Optimist. I’m Matt Ridley and I have spent the past 40 years writing on topics of import and intrigue, which for me include genetics, evolution, technology and innovation. https://rationaloptimistsociety.substack.com/
Rational Optimist Society - Founder
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