10x rule as normally used is just saying, essentially, you can call off 1/10 of effective stacks hoping to hit a set, and people think this is profitable
How can that be profitable ???
O.K so eight times in a row you call off a tenth of your stack with a small pocket pair and miss the flop. You do the same again with pocket 3's and finally flop your set, you bet out and your opponent folds. So youve lost a seventh of your stack...wp.