Time travel is not possible

If it is, we will have been visited by time travelers.

Feel free to disagree and/or flame!

>>44
Mindboggling.
0. Dot
1. Line
2. Flat object
3. 3D object
4. 3D object in time
5. ?
6. ?
7. All possible timelines for our universe
8. ?
9. All possible timelines for all possible universes
10. All possible timelines for all possible universes is a dot here. Post over.