OP: even donks pick up AA and can stack you. Trust your reads, but anyone can get a big hand and get tricky at any time (FPS is the hallmark of donks). If you stack off preflop TT < AA because you've seen him limp/shove all-in with 22+ and A2s+, it's still a good read.

I try to separate my reads into two main categories: commits too many chips on bad hands (lots of donks make these mistakes) and folds too many good hands (less donks do this). You also have to keep preflop reads separate from postflop reads as many donks play a loose-aggressive style preflop and a weak-tight style postflop. If they call an extra street of value routinely on the flop/turn, then fold, but you've never observed his river play, err toward big value bets on the river.

I believe this is one thing stacks was talking about, taking a read from one situation and applying to another situation to infer what is likely to happen.