>That's a pity - I was having visions of civilisations running backwards
>like a video running backwards. You know, anti-people leaping up out of a
>pool through a backwards splash onto a diving board; trains reversing back
>over smashed (long) vintage cars, which reassemble as the train removes
>itself from them; Ninjas jumping normally off rooves down on to the ground.
Let's assume, for the moment, that there is matter that travels backward in time. We would never see it except for perhaps, maybe, a second. It would suddenly appear then suddenly disapear.
It is real hard to put in words what I'm saying so I'll attempt to draw an asci picture. (Note: I'm a terrible artist <:-)
PRESENT _ _ _ -> |----| <- PAST -> |----| <- FUTURE -> ->|----| <- <- - - -