Allowing blackmail seems prima facie good to me, since it's a tax on covert illicit behavior. Zvi seems to think, to the contrary, that it's prima facie bad.
Robin Hanson argued: If there exists some information about someone that, if revealed, would cause people to coordinate to punish them, then it's good for this information to be revealed because on average it's good for such people to be punished. Blackmail rewards people for investigating covert illicit behavior that would otherwise remain undetected, and correspondingly punishes the people engaging in that behavior.
Zvi offered two interesting arguments against this, which I'll address one at a time. Continue reading