On Jul 1, 2011, at 07:59, Clive D.W. Feather wrote: > Let me try an explain this. [I've just given a paper explaining this to > lawyers, so I should be able to do it to computer programmers.] Is there a copy of this paper online somewhere? Every so often I have to explain these esoteric time details to people, and a reference to point to would be handy.