But a SINGLE move can only be made determining PRESENT information, without saying: "Oh, I have gone all-in 4 times with AA, I have AA again, I must fold." That is obviously wrong.

Haha, of course I'm not saying that. And I told you I'm not talking about EV here, I'm talking about the chances to win the pot. And you can determine your overall EV.

Aces three times, again. Statistically a coinflip. I'm really right here

Now, how to calculate EV? Well I'll do it like in trading. Should be the same idea. Expectancy=%Won*How much you won - %Lost*How much you lost.

If you play a cash table for 1$ you get 0.80$-0.20% = 0.6$, so you expect to win 60 cents everytime you go all in with aces on average.

Hmmm, in a tournament it gets tricky. On the bubble like you said. The only way I can figure it out is to suppose that if you win you will surely get ITM.

So EV=80% * at least 2 times your investment (3rd place) - 20%*your investment (entry fee). Let's say you play for 1$. That is: 0.8*2$-0.2*1$=1.4$ at least!!! (if you finish 3rd). So it's of course +EV. Every time you push with aces you can expect to make at least 1.4$ in this spot. (10 fish SnG payout 20%-30%-50%). Happy now?