Alright, alright, alright. So, quantum mechanics, man, it's like this fundamental theory that gets down to the nitty gritty of nature at that tiny atomic level. It can describe all these systems that classical physics just can't wrap its head around. I mean, classical physics is cool and all for the everyday stuff, but when we're talking submicroscopic scales, it's like See ya later, alligator. And get this, most of those classical physics theories? Yeah, they can be traced back to quantum...