Random.. Driving me nuts.

[A-Man]

Well, I was wondering yesterday when i was laying in bed, what the hell is random. Is anything really random actually exists? Or is it just a complicated sequence in number nd people just call it "random"? How are random numbers generated in a computer independent to time or any other thing ? Or am I wrong and the computer just calculates "random" numbers by doing some kind of calculations using the computer temperature (i know it sounds stupid)? So many questions here and I hope some people here could answer my doubts about this thing we call "random".