I still don't know why you would bet jacks, if the opponent is firing bluffs at the correct frequencies should we not just resort to playing a balanced unexploitable strategy, e.g.

Villain bets $1 to win $1.90 1/(1+1.9) = lets say 35%

So if we are folding more than 35% of the time we are exploitable to pure bluffs, although most of his betting range will have equity against us but i'm unsure how to account for this, i guess he just needs us to fold less than 35% because he wins at showdown some of the time.

So could we not set our range up so that we are folding exactly 35% or the adjusted % of the time if you account for semi-bluffs.

And have a range that looks like;

C-bet bluff--cbet value--check call--check raise bluff--check raise value--check fold.

We would want to make villain indifferent to bluffing when we check. Or we could just move a lot of our strong hands into our checking range so that we're not folding more than 35% of the time.

Was reading that thread davvidem made maybe we should make a fundamental theorum thread, because i don't know why you'd value bet with less that 50% equity, why turn a hand with SDV from your range into a bluff? Is it because when you have close to 50% equity you can still cause your opponent to make a mistake by calling with a hand worse than yours something close to the bottom of his calling range and fold a better hand some small % of the time, without giving a free card to a vulnerable hand???