my dumbass wife ♥

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 deviations 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 where 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. However, the missile must also know where it was.

Raku-Chan: (Gasps) Koneko-Chan, look at that guy over there! Nya~ he's so sugoi~ desu~

Hitoshi-San: Well I just happened to be walking by and I saw you two lovely ladies walkin'. How you doin', kawaii neko girls. Nya~ Rawr.

Raku-Chan: Nya~Nya~Nya~Nya~ what should I say?! Nya~Nya~desu! Nya~

Hitoshi-San: Woah what's wrong with her huh?

Koneko-Chan: Oh she just gets like that after sometimes. Y'know she really young.

Raku-Chan: Huh I should go say "Hi" Nya~ H-hello N-nya~

Hitoshi-San: Hi there! My name is Hitoshi-San

Raku-Chan: Hitoshi-San? Oh nya~ my name is Raku-Chan nya~

Hitoshi-San: And what's your name?

Koneko-Chan: Oh I'm Koneko-Chan

Hitoshi-San: Mhm

Koneko-Chan: Ahaha haha

Raku-Chan: HAHAHAHA you guys are so funny! Nya~ That Hitoshi-San. He was so sugoi! Maybe I can treat him to ice cream, nya~ or maybe he would like to play with me at the park. Oh, I just hope I can see him again sometime. He's so sugoi! Nya~!

Let Him Speak to The People!