[Cryptography] RNGs, Entropy, and Unguessability (really clock synchrony)

[jrzx]

> We had to consider distributed systems. It was obvious
> to me that there is no place in the universe
> (per relativity) where one could know a
> well-defined state. What could it even mean?

Designing distributed systems so that they do have well
defined states and well defined transitions is hard,
but doable, and routinely done.