Originally Posted by LektorAJ
Should there be "and", "so" or "because" in the middle of that?
If there's anything, it's "that"; i.e. bluff more (or less) often until you hit the appropriate frequency, which you will recognize has happened because you're getting called half the time.
The goal isn't to get called half the time (so), the consequences aren't the focus of the sentence (and)... "Because" might work, but it's not what I remember and it feels incomplete (since the goal includes getting value on strong hands as a side-effect)