Vale Jerry Lewis - Dominic Case on Lewis as innovator (from a Facebook post)

I confess I never really enjoyed Jerry Lewis's humour. But one entirely different aspect of his story has escaped most of the obits and tributes. Lewis claims to have 'invented' the process of video assist. In his time this was a video camera bolted alongside the film camera, to give an instant replay of the take, rather than waiting overnight for rushes. Strictly not his invention, as the idea was patented some time before. But he seems to have exploited it more than anyone before him did.

Later the film camera was modified to split a video image off that was captured through the same lens, liberating the camera from its operator, the director from the camera, and leading to the Louma crane and arguably the decay of civilisation as we knew it.