I just finished watching a documentary called The World's First Time Machine on youtube about a dude trying to use lasers to send particles back in time. It's kinda old but I'm sure a lot of you have already seen it. I can link it if you want. But they were acting like the dude was on the brink of making this thing work, yet I haven't heard anything further on it. Anyone know anything about it or if what he was trying to do is even possible?