Letter From P. JAY FLEISHER No Future For Plastics To the Editor: Every few weeks I wait with wonder, “what flavor cool-aid is he drinking now?” And, sure enough, Mike Zagata brought me up to date. Last week’s column told me just how far out of touch he is on virtually all matters related to science. His latest entry (“Better Living Through Plastics”) touts the virtues of plastic and the petroleum industry that provides it, and wouldn’t you know this…