With an estimated 100 billion neurones, a quarter of a million of them are created on average during every minute of the nine months of gestation, at times more. Each of these neurones, needless to say, must then make thousands of connexions with other neurones, and all this must end up in a minutely specific, hugely complex architecture with every part of the whole in exactly its required location. Where was that information in the ‘programme’ that DNA is said to enshrine?
