Why the concept of time travel is more useful than the actual thing

Doctor Who may just be science fiction, but there could be important lessons to learn from it.

Since H.G. Wells’ book The Time Machine, first published in 1895, authors, philosophers, and scientists alike have been obsessed with the notion of travelling through time. The writers are the beneficiaries; the concept has been incorporated into thousands of books in the last 100 or so years, with billions made from books centred around time travel. Not just books, but also…