How replaceable is public key crypto?

Suppose that there were was no number theory, no elliptic curves, no lattice-based crypto. Perhaps because our universe was rigged against cryptographers, or perhaps because our society had never decided to explore abstruse mathematics. How bad would this be? Would electronic commerce be impossible? Would modern society crumble? In this post I’ll explore the possibility that … More How replaceable is public key crypto?

Checkmate on blackmail?

It has been argued that blackmail should be legal if gossip is legal, and even that there are no good consequentialist counterarguments (!). I think this isn’t obvious because the disclosures incentivized by blackmail are systematically worse than gossip. Gossip has costs and benefits: on the one hand people learn information they can use to make better decisions … More Checkmate on blackmail?

Analyzing divestment

Suppose that I’m considering investing $1 in EvilCo (ticker EVL), but decide I don’t like the company’s activities so I refrain. Or maybe I decide to short EVL. Is this effective in reducing EvilCo’s activities? In this post I’ll argue: Divestment can be reasonably effective, despite replaceability. My best guess: I can often sacrifice <$1 … More Analyzing divestment

On redistribution

I’d prefer it if states took from the rich to give to the poor. But I wish they did it in a reasonably efficient way, such that poor people get about $1 of utility for every $1 of utility a rich person loses. I think we often fall short of that goal. (An expansion of … More On redistribution