But this was transparently driven by commercial rather than imaginative or innovatory forces.

Because, like the nutty professor, Lewis was an explosive experimenter with a dazzling skill, and an audacious, innovatory flair for the technique of the cinema.

"Yes, we have an innovatory spirit, deeply rooted in our history," he asserts.

Last year it invited bids for an innovatory mobile service that could find and guide future pilgrims.

And as Floyd opened the first set of the British tour – incidentally the first time I've seen them since 1970 – a new piece, tentatively titled The Dark Side Of The Moon, showed that their writing had taken on a new and again innovatory form.