I have only just read Boots’ comment (July 16) about Charles Rennie Mackintosh being accused of pinching others’ details

Of course all great creative people steal, including the best architects. I still have a copy of Peter Smithson’s “How to crib” article.

However, Mackintosh, I have argued elsewhere, was somewhat unusual in having (excuse the shorthand) a photographic memory. He said he could call up “a peep show in [his] head”. Naturally he used this extraordinary facility, and almost always to utterly transformative and original effect.

John McKean, Brighton