"Craig (1992:238) claims that it is 'philosophically unobjectionable' to conceive of God as causally prior to the Big Bang, since 'God's act of creation may be regarded as simultaneous with the origin of the universe'. However--as Grünbaum observes on several occasions-- many of us find it hard to make any sense of this suggestion. It is true that there are contexts in which it clearly makes sense to speak of 'simultaneous causation'--e.g. as Craig notes, there is no impropriety in the claim that the downward pressure exerted by the otherwise unsupported head causes the indentation in the pillow--but this is compatible with the claim that, strictly speaking, causation must be local and mediated by finite signals. On this view, given a sufficient margin of error, causation can appear simultaneous--but there is no reason to think that there is any genuinely simultaneous causation." Graham Oppy, "Professor William Craig's Criticisms of Critiques of Kalam Cosmological Arguments By Paul Davies, Stephen Hawking, And Adolf Grünbaum" (1995)