what if you could turn back time, not in the sense where u're free to roam about, but something like this...
imagine you are crossing the road, and you see a car about to knock someone down, then each step you take forward would have you see that person being slowly knocked down and each step back shows the car moving back in the other way...
would you walk back all the way? or just continue walking tho you know that person is going to die.
