[madog]

You would be a fool to act based off only 2 instances of seeing a particular behaviour. That's why you have to weigh up how many instances you've seen. Sometimes if it's less than X instances it's not worth considering that particular statistic as valid.

Now say I have thousands of hands viewed against you, and you raise pre-flop 50% of the time. That is pretty significant information about the types of hands you play. If I have only 10 hands I've observed, that same stat means nothing.

The theoretical optimal play depends on who you're playing, as more value could be extracted in certain situations vs certain players.

For example, if I've seen you face a pre-flop 3-bet 1000 times and you've folded 99% of the time. That would be a good opportunity to recognise that 3-bet bluffing this player more often would have value, and be a more optimal play than some default. Contrast playing someone who called pre-flop 3-bets 75% of the time it wouldn't be optimal to 3 bet bluff here. Different opponents, different optimal plays.