"...when you're young your opponent is the future; but when you're not young, your opponent is the past and everything you've done in it and the problem of getting away from it." In his post "blow-up" "Existence Period" Frank Bascombe has found a temporary refuge from the unalterable past. Having survived an atomic blow-up myself, I can very much relate, and find that Frank's attitude is one worthy of emulation. Continuity is vital when the "Permanent Period" is not practicable, or is undesirable. Keep the flux!