If the weed recently confiscated from Tim lincecum's Mercedes represents the extent of his illicit drug use -- and I must emphasize "if" -- the next generation could look upon the Giants right-hander as not merely an uncommonly gifted pitcher but something of a social pioneer. Though it won't be on the same epic scale as a Jackie Robinson or a Muhammad Ali, who sacrificed considerable parts of themselves to bear necessary torches, Lincecum's contribution will stand as pa...