Clint O'Dell [firstname.lastname@example.org] wrote:
>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.
Uh, nope. I've never been too fond of this version of antimatter, but here's how it works.
So what we see in that case is a particle interaction in which two particles are created, one of matter, and one of antimatter. After a short time, these two particles collide and annihilate, and some other particles are produced from the annihilation energy. But to the particle in question, it just appears to be going around an infinite loop, where its time direction is reversed at each collision point.