[Right Wing Assault]

so where are all the time travellers

Either the people in the future aren't smart enough OR we manage to blow ourselves to pieces befre we figure it out. OR a new ice age comes and kills us all.

[babyface00]

Either the people in the future aren't smart enough OR we manage to blow ourselves to pieces befre we figure it out. OR a new ice age comes and kills us all.

What if the first attempt at backwards time travel so damages space time that it becomes impossible to travel before it or, worse yet, all time stops at that point?

IIRC, there were serious concerns before the first atomic bomb test that the reaction might not stop and would eventually take out the entire planet.