How do you know when someone has flopped a set?

Originally Posted by surviva316

When you go to the flop with your stack being just 1.1 times the size of the pot, you will not be able to narrow villain's range down to just a set. You will preeeeeettty much always be stacking off with top-pair-top-kicker.

Poker is a game of incomplete information, and as such, you will sometimes lose hands.

Maybe i was just unlucky there but do you think that was the right play or should i have raised 3 times his bet before the flop?