I was visiting a certain unnamed SF writer once when he (or she) was working on an invisible man story. This writer had the person becoming invisible by being transparent to light. When I pointed out that the invisible man would also be blind - that the eye needs darkness for the retina to work, just as a camera does - the SF writer became quite irritated. Too bad - this is basic science.
Dickens was not "a major influence" on me. As was true with E.M. Forster, I've always tended to be put off by Dickens's sensibilities, sentimentalities, and even his characters' names. But his life . . . ah, that's very interesting. Especially the last years after his involvement in a train wreck at Staplehurst where he experienced..."