I think that it is time that we reminded ourselves that this whole debate boils down to belief vs evidence. Creationists choose to believe that the Bible expresses the literal truth about origins of the Earth and the living things which inhabit it. They also choose to believe in an immaterial, ineffable Creator and refuse to believe, or are unable to believe, that the Universe and life on Earth arose spontaneously as a result of natural processes. They are, of course, entitled to believe anything they like - but until they can produce evidence to support their beliefs, they cannot call themselves 'scientists' (whatever their academic qualifications may be!). And to a true scientist, the possible existence of an immaterial, ineffable Creator is an irresistible challenge! No real scientist is going to stand there shuffling his/her feet mumbling piously about God being "unknowable"!