Good grief...youve destroyed the premise for countless scifi movies..books..tv shows...killjoy.
Science Fiction should be more science and less fiction....................
There’s another problem with Time Travel I forgot to mention in my post #43:
MASS.
Every atom of your being, your time machine and whatever else you take with you existed from the beginning of time in some form or another.
By taking this mass into another time, forward or backward, creates a situation where the total mass of the Universe is increased, which is a no-no..................