If the faith fits

I would be surprised if Prof Brian Cox referred to “facts” (James Watson, Letters ,19 October) as all scientists usually beware of using the word. They understand that we can-

not know the“truth” about anything. All we can do is draw conclusions from “evidence”, which itself might be unreliable, and express t hem as a “probability”. Scientific beliefs are a set of high probabilities, contingent on evidence; these beliefs can change with new evidence .“Faith” is belief without evidence.

STEUART CAMPBELL Dovecot Loan, Edinburgh