There are normal times when it is wholly admirable to be steadfast, resolute, unconflicted, and therefore when integrity is unmistakenly a virtue. The person of integrity knows what to do, and does it. But as we have been exploring, there are also times when certainty and single-mindedness indicate something less admirable: a deafness to voices that should be heard or a blindness to aspects of a situation that need to be considered.

There may be rhetoric about the socially constructed nature of Western science, but wherever it matters, there is no alternative. There are no specifically Hindu or Taoist designs for mobile phones, faxes or televisions. There are no satellites based on feminist alternatives to quantum theory. Even that great public sceptic about the value of science, Prince Charles, never flies a helicopter burning homeopathically diluted petrol, that is, water with only a memory of benzine molecules, maintained by a schedule derived from reading tea leaves, and navigated by a crystal ball.

People who have cut their teeth on philosophical problems of rationality, knowledge, perception, free will and other minds are well placed to think better about problems of evidence, decision making, responsibility and ethics that life throws up.

The absolutist trumpets his plain vision; the relativist sees only someone who is unaware of his own spectacles.

The absolutist parades his good solid grounding in observation, reason, objectivity, truth and fact; the relativist sees only fetishes.

In Michigan recently a man won a lawsuit for substantial damages because, he claimed, a rear-end collision in his car had made him a homosexual.

There are normal times when it is wholly admirable to be steadfast, resolute, unconflicted, and therefore when integrity is unmistakenly a virtue. The person of integrity knows what to do, and does it. But as we have been exploring, there are also times when certainty and single-mindedness indicate something less admirable: a deafness to voices that should be heard or a blindness to aspects of a situation that need to be considered.