I'll try and destroy this idea that playing balanced means sacrificing ev :
Let's take an unbalanced situation as a starting point :
We're always betting strong hands and that leaves our checking range completely capped.
What should villain do? He should put tons of money in when we check (his value range + bluffing range gets much wider).
Now what happens when we move a few nut combos from our betting range to our checking range?
Since villain is going crazy when we check, the ev of checking with strong hands will skyrocket and be much higher than when we bet.
As we add more and more strong hands into the checking range, their ev go down (villain should be less aggressive).
By the same token, as we remove more and more strong hands from our betting range, their ev go up (villain should call more).
It boils down to this simple fact : the weaker our range, the more chips villain should put in the pot.
At equilibrium the frequencies are such that the ev of checking will be equal to the ev of betting. We are perfectly balanced and never taking a lesser ev line, or never sacrificing ev!
Those frequencies depend partly on which player have a "range advantage". The bigger our advantage, the more we should tend to bet strong hands because :
a) Villain's range does not contain as many strong hands so it will be harder for him to attack our weak range (We have to cap our checking range to the point where villain should attack at such a frequency that we're indifferent to betting and checking).
b) It gives villain the opportunity to keep the pot small when we're strong.
Quote:
Originally Posted by EggsMcBluffin
BTW what are w eactually defining "line" as here--is it the action on a particualr street, or a particular path through entire the tree, or something else?
The author of the book is using the term as a particular street, at least in the pic of the page I posted (Afterall the full path through the tree is only the addition of particular streets where the frequencies are at equilibrium)
Everything you said (except possibly the math part, I can't tell since I'm a noob) seems on point to me.