A great scientist – and larger-than-life character – of the twentieth century, J. B. S. Haldane, was once giving a public lecture. Afterwards, a lady stood up and said something like this:
‘Professor Haldane, even given the billions of years that you say were available for evolution, I simply cannot believe it is possible to go from a single cell to a complicated human body, with its trillions of cells organized into bones and muscles and nerves, a heart that pumps without ceasing for decades, miles and miles of blood vessels and kidney tubules, and a brain capable of thinking and talking and feeling.’
Haldane gave a wonderful reply: ‘But madam, you did it yourself. And it only took you nine months.’