system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How would discovering that something can move faster than the speed of light be related to the feasibility of time travel?

My professor summarized the CERN situation  this way, and I felt like a  year based on my understanding of what he said.
gpt
to our best understanding, particles moving faster than light are moving backwards through time. But the problem is that with our current understanding anything not already moving the speed of light could never move at the speed of light. that means there is no way to speed up or slow down to change between faster than light and slower than light. That then means there is no way to change between moving back in time and moving forward in time.

NOTE: Tachyons, particles moving faster than light, have never been detected.