I was watching [this](https://youtu.be/eqvBaj8UYz4) video and even though I was trying very hard, there are some things that I still don’t understand. I get what’s Turing’s machine but I don’t understand what happens later. There’s some kind of paradox, that if you have machine that decides if programe will halt (solve the problem) at some point or just loop forever (not being able to solve problem) and then you give this infromation to another machine it’ll do opposite thing. So if the machine says “this program will halt” it’ll then loop forever and if says it’ll loop forever, then it’ll just halt.
I know it’s paradox so it isn’t supposed to make sense but well… I think I miss something here. Can someone explain it to me in the easiest way possible?