[Cryptography] cheap sources of entropy

dan at geer.org dan at geer.org
Sun Feb 9 23:20:37 EST 2014

All of this discussion about proofs, how certification is done,
the degree to which by the time something is studied to death
an assumption will have changed, etc. -- the lot of it reminds
me of nothing so much as Goodhart's Law:

   Once a social or economic indicator or other surrogate measure
   is made a target for the purpose of conducting social or economic
   policy, then it will lose the information content that would
   qualify it to play such a role.


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