You're jokes ain't funny, grandpa

+rep MVP of the game

pee pee poo poo

^_^

The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is - whichever is greater - it obtains a difference or deviation. The guidance subsystem uses deviation to generate corrective commands to drive the missile from a position where it is, to a position where it isn't, and arriving at a position that it wasn't, it now is. Consequently, the position where it is, is now the position that it wasn't, and it follows that the position that it was, is now the position that it isn't. In the event that the position that it is in is not the position that it wasn't, the system has acquired a variation. The variation being the difference between where the missile is and where it wasn't. If variation is considered to be a significant factor, it too may be corrected by the GEA.

I'm sorry I don't know who Skrillex is. I was so busy listening to Bach, Chopin, Tchaikovsky, and other various classical artists that I forgot to go bumbling through Youtube to look for whatever that is. [Side note: Skrillex seriously just sounds like a bunch of random, computer generated, annoying noises to me. I'll stick to piano and violins.]