Kadin is a user on mastodon.sdf.org. You can follow them or interact with them if you have an account anywhere in the fediverse.
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I don't know how I've not run across this essay before, but it's really good: "Of Flying Cars and the Declining Rate of Profit"
https://thebaffler.com/salvos/of-flying-cars-and-the-declining-rate-of-profit
