One problem I have with the idea that time travellers might have taken anything back to ancient Egypt is that scientific opinion seems to suggest that past-directed TT could not go back beyond the point of the first "time machine". If that is the case, and if past-directed TT has been around for thousands of years, why are there not more examples of it? Every other technical advance has escalated (computers, mobile phones etc), so why not time machines?


There never was nothing.