My mom proposed to me her concept of why she doesn't believe in String Theory and other abstract ideas shown through math. She says that in a mathematical reality that it is physically possible to make movement but mathematically it is impossible. This she explains is because when you take two points in space such as say two integers , 1 and 2, it is mathematically impossible to ever reach that second point due to the infitesimal changes in x over time. She says that you never truly reach that 2nd point because there is always some time in infinity that you are occupying trying to reach your destination. I was wondering if anyone has an argument to that theory or some kind of rebuttal that would show her that yes, at the moment we cannot explain everything with math but I believe this theory of hes to be flawed, I just can't determine where and why it is so.