Sir – Daniel Emlyn Jones (Letters, July 11) imagines that you can define something without reason.

Let’s call it pure guesswork. Mr Weavers appears to think that positing the existence of a God can answer the question as to who or what made things. Sadly he seems unable to ask the next question: who made God? An idea is only an idea until it is proved. M. Hugh-Jones mentions psychic research, referring to “a simple scientific fact”, then appearing to admit that it cannot “be repeatedly tested in a laboratory, as sceptics constantly demand”. This would rather suggest it is not scientific fact.

None of them require corroboration, so pretty much anything goes. Like a Doctor Who script, they feel free to invent escape clauses for themselves regardless of credibility.

Paul Surman, Horspath