u asked for the facts.
Fact #1: 1:8 times u will make your set ON THE FLOP.
"Set Mining"- based on the odds
of flopping a set. (12.5%) converted to fractional is 1/8 times you will flop your set.
soooo... heres an example of when you should call with a pp,
ok say its 9 handed. blinds 25/50 and everyone has 2000 chips.
you are in the BB with 44 actions folds to the button, who raises 5x the bb(250), sb folds, you...?
Call. you have 8x250 in your stack, same as your opponent, and therefore are getting the correct odds to make this call.
ok so lets say you dont make your set and fold.
the next time in your bb you pick up 66. again action folds around to the button, who makes the same 5xbb raise, you...?
you are down the 250 chips from last hand+ the 25 small blind=275
now in the bb again 50 more chips in the pot=325
2000-325=1675 (1725 including the 50 for your bb)
facing the same 5x raise...
now with your stack you are only getting odds to call 215 chips and set mine this time. since it is only 200 chips to call again you are getting that 8:1 to make the call.
you dont want to always just assume that calling the 4xbb bet preflop is the correct play
basically 1:8 (12.5%) is the magic number
your stack should be 8x the bet you are calling at least.
your opponents stack should also be 8x the bet.
hope this kinda helps u realize which situations u should and shouldnt be playing pp's in. gl.