Time travel causality paradox in physics. What the heck, I thought I would come up with a possible solution to this physics problem, just from contemplative thinking.
Some physicists say it is theoretically possible to travel back in time.
However, this journey could present a serious paradox. This is a time travel paradox. It seems like a cumbersome patch to me. Say John was born in 1955 and he decided to travel back to 1950 in order to try the experiment of killing his mother. When he traveled back there, his mother would not be anywhere to be found.