I was quite disappointed that the closing credits didn't show the arm in its box.
Somehow Vicky's journey into the past seemed quite improbable today - as if it really were only a dream. Vicky was saying the history books don't tell everything, and I was thinking: why should we believe her over a history book?
When Vicky was showing Roger/Joshua the telephone, I was wondering if we'd get a look at if through Joshua's eyes, and if so, what it would have been transmuted into. I couldn't think of anything. Maybe the writers couldn't, either.