 The more radical type of multiple realizability seems to force increasingly narrower domains for reductions to be relativized; at the extreme, to individuals at times. This much “local reduction” seems inconsistent with the assumed generality of science. To avoid this problem, some philosophers of science have suggested significant changes to the “classical” (Nagelian) account of (intertheoretic) reduction to enable the account to handle multiple realizability of reduced kinds, a feature of a number of “textbook” cases of scientific reductions.