David Friedman’s Substack
David FriedmanIdeas about a wide variety of subjects
| Platform |  | Pricing | Only free issues | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 1907 | Founded | 3 years ago | Last Issue | 7 days ago |
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Testing Smith’s Explanation for the End of Feudalism
Adam Smith, in The Wealth of Nations, proposes a simple and ingenious explanation for the end of feudalism:
But what all the violence of the feudal institutions could never have effected, the silent and insensible operation of foreign co...
Solar Sail calculations
Listening to Michael Longcor’s song “Windward Passage” started me wondering how workable a solar sail would be as a way of moving things around in space and how much of the answer I could calculate on the basis of simple physics. I like fig...
False Positives
The picture above1 shows a series of concentric circles. As I look at it, I see other patterns. With only a little effort, it turns into a series of clockwise spirals. Or counter-clockwise spirals. Or … . It feels as if my internal software...
My Europe Trip
I am recently returned from a two week speaking trip in Europe, starting in Paris (nine hours of jet lag) and ending with a night spent in Heathrow airport; I had missed my morning flight to London from Madrid due to forgetting that the UK,...
The Economist on Gerrymandering
Not that Republicans in Indiana oppose gerrymandering in the abstract. In fact, they are experts at it: 20 years ago Democrats held five of the state’s nine congressional seats. Today they hold two even as their vote share is 38%. (The Ec...
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