As for me, There are days i wish i could go back in time and undo past errors i made, But accepting them and moving on is how we grow as individuals. But learning from them is your call. I have made a rubbish load of mistakes in my past--and the consequences of some i still regret to this day
So what you should be doing instead learning of way of how not to repeat them. I assume that is why most would want to go into the past. AS for viewing past events, bad idea. Just simply watch the film: a sound of thunder.
well, at least i do my best to never repeat mistakes, or my name is fluffy