Tim Crane

This chapter defends Terence Horgan's claim that any genuinely physicalist position must distinguish itself from (what has been traditionally known as) emergentism. It argues that physicalism is necessarily reductive in character — it must either give a reductive account of apparently non‐physical entities, or a reductive explanation of why there are non‐physical entities. It contends that many recent ‘non‐reductive’ physicalists do not do this, and that because of this they cannot adequately distinguish their view from emergentism. The conclusion is that this is the real challenge posed by Joseph Levine's ‘explanatory gap’ argument: if physicalists cannot close the explanatory gap in Levine's preferred way, they must find some other way to do it. Otherwise their view is indistinguishable from emergentism.

In The Mind and the World Order, C.I. Lewis made a famous distinction between the immediate data ‘which are presented or given to the mind’ and the ‘construction or interpretation’ which the mind brings to those data (1929: 52). What the mind receives is the datum – literally, the given – and the interpretation is what happens when we being it ‘under some category or other, select from it, emphasise aspects of it, and relate it in particular and unavoidable ways’ (1929: 52). So although any attempt to describe the given will inevitably be an interpretation of it, this should not give us reason to deny its existence: ‘no-one but a philosopher could for a moment deny this immediate presence in consciousness of that which no activity of thought can create or alter’ (1929: 53). Whatever those outside philosophy might think, Lewis was certainly right about what philosophers were prepared to deny. His conception of the ‘given’ is without question one of the targets of Wilfrid Sellars’s influential critique of the notion of the ‘whole framework of givenness’ (1957).1 One of the things Sellars was attacking was the idea that something that was merely given by the senses could put one in a position to be justified in making a judgement about the empirical world. The..

Peter Unger has changed his views somewhat since he wrote three famous philosophical papers – “I do not exist”, “Why there are no people” and “Why there are no ordinary things” – in 1979. He now thinks not only that there are people, that he does exist and that there are ordinary things, but also that any adequate philosophy – what he calls any “humanly realistic philosophy” – must begin by acknowledging these facts. Believers in ordinary things will be relieved. However, Unger now thinks that these ordinary truths are put under pressure by what he calls the “scientiphical metaphysic” which dominates contemporary philosophy. He labels this metaphysical view “scientiphicalism”, because it is neither entirely scientific nor entirely philosophical, but some unholy blend of the two. The main burden of his long new book is to launch an attack on scientiphicalism.