What a bunch of bullshit.

True, if someone calls just about everything you can't bluff them by definition. However, outside of the penny tables, play money and lowest live play limits they're a rare breed.

Generally, the suckers in our games play too many hands and take them too far. They play weak hands and weak draws because their mind is filled with the possible, not the probable. They dream of hitting that magic card and run into that magic hand that's going to pay them off for the max. We make money being more realistic about both our odds of hitting and how much we figure to profit if we hit.

Hence, at the end, the loose/passive is often left at a later street, a bit of a pot and not much (if any hand.) They're bust, didn't come, didn't hit, big fat whammy. Now take it away from them. They can't call and they know it. Bet your hopeless hands into them! They'll often laydown a weak better hand. Fail that, they'll pick you off and you'll validate their calling behaviour. It's a win/win situation. Remember to SMILE when you get picked off.

Well, you can't bluff a calling station, but you sure as hell can bluff the loose/passives!