I trust the theory and know you guys are right.

I guess I am trying to

1) understand the style of the player willing to call bets with a negative expectation

2) estimate the effect such player's contribute to variance and/or my own expectations.

For example, if there are 5 maniacs at a full table willing to chase a four flush at any price, what adjustments should a player competing against them make?

Appreciate the advice.