Time Travelling

I was just thinking. Technically, it should not be possible to time travel, because it takes time to time travel. And it's not like time just stops still when you time travel. Anyway, I just watched "back to the future". At the end, that guy sees himself go back in time. If that really did happen, there should have been two of him in that time. Another reason why time travel is probably impossible.
SMELLY SOCKS
Cinderella's shoe was originally made of squirrel fur (verre) which was later mistaken for glass (veure).