Time paradoxes? Bah...I don\'t believe in them.
Truthfully, this is all speculation and I have no scientific evidence to back any of this up, but I'm going to tell you anyway. I think there is, in fact, a stream of time. I also think there are certain forces keeping us in place within this stream. Now, if we could somehow break away from these forces, we could travel through time. Since we're no longer connected to the time stream, we'd be unaffected by any changes that occur within said stream. Therefore, we could go back and kill our own grandparents without any ill effects to us. Nothing you do would alter anything about you since you're no longer part of time. Just my own wild speculation.
Truthfully, this is all speculation and I have no scientific evidence to back any of this up, but I'm going to tell you anyway. I think there is, in fact, a stream of time. I also think there are certain forces keeping us in place within this stream. Now, if we could somehow break away from these forces, we could travel through time. Since we're no longer connected to the time stream, we'd be unaffected by any changes that occur within said stream. Therefore, we could go back and kill our own grandparents without any ill effects to us. Nothing you do would alter anything about you since you're no longer part of time. Just my own wild speculation.