Abstract

A number of writers have suggested that laws of nature must be universal in space and time. Just what this claim amounts to is the focus of the present study. I consider and compare a number of interpretations of the requirement, with especial reference to an example by Tooley which seems paradigmatic of the antithesis of universality in space and time. I also sketch a number of other concepts of "local", "global", and "universal", each of which should be kept distinct from "universality in space and time ". I leave open the issue whether or not laws must satisfy any of the requirements