The question Stephen Fry poses about why God would create a world where children suffer is a good one, and of course all sensible people wonder this at some time.
The problem is when Stepeh Fry and other atheists insist this is the end of the conversation rather than the beginning.
As Williams puts it, the way Fry asks the question, one wonders whether he would brother to listen to the answer.
No matter how good our logic or evidence or powerful personal experience, I think we should always be ready to be surprised. There may be an answer when we least expect it.