Archaeologists discover ancient tools dating back millions of years (CBS News channel)

Remember, this is all theory.... we will never really be able to prove it. What if they flaked off a piece and started piling them up with a very OCD one around who started telling everyone the piles had to be within such and such boundaries and suddenly... ta da a pyramid shape appeared? https://www.youtube.com/watch?v=P9Zc2noSsWw