The replicators that exist tend to be the ones that are good at manipulating the world to their own advantage. But other replicators are also successful otherwise they would not be common. The world therefore tends to become populated by mutually compatible sets of successful replicators, replicators that get on well together

It sounds superficially fair. But it presupposes that that there is something in Christian theology to be ignorant about. The entire thrust of my position is that Christian theology is a non-subject. It is empty. Vacuous. Devoid of coherence or content. I imagine that McGrath would join me in expressing disbelief in fairies, astrology and Thor's hammer. How would he respond if a fairyologist, astrologer or Viking accused him of ignorance of their respective subjects?

You can't even begin to understand biology, you can't understand life, unless you understand what it's all there for, how it arose - and that means evolution.

I think we have got to start again and go right back to first principles. The argument I shall advance, surprising as it may seem coming from the author of the earlier chapters, is that, for an understanding of the evolution of modern man, we must begin by throwing out the gene as the sole basis of our ideas on evolution. If there is only one Creator who made the tiger and the lamb, the cheetah and the gazelle, what is He playing at? Is he a sadist who enjoys spectator blood sports? ... Is he manuvering to maximize David Attenborough's television ratings?

You can't understand European history at all other than through religion, or English literature either if you can't recognise biblical allusions.

The idea of tiny changes cumulated over many steps is an immensely powerful idea, capable of explaining an enormous range of things that would be otherwise inexplicable.

It really comes down to parsimony, economy of explanation. It is possible that your car engine is driven by psychokinetic energy, but if it looks like a petrol engine, smells like a petrol engine and performs exactly as well as a petrol engine, the sensible working hypothesis is that it is a petrol engine.