"Several years ago, I thought that the writings and arguments of such people as Dawkins and Aczel, attempting to disprove or prove the existence of God, were a

"Several years ago, I thought that the writings and arguments of such people as Dawkins and Aczel, attempting to disprove or prove the existence of God, were a terrible waste of calories. " So what changed Lightman's mind? Substitute 'tooth fairies', 'Santa Claus', 'Lucy van Pelt', ... for 'God' in that list. We can't prove or disprove any of those and it makes no difference to the progress of science.