It's not "counting cards," but to be minimally successful at certain variants like seven card stud, I'd argue one must[0] remember cards that have been folded i

It's not "counting cards," but to be minimally successful at certain variants like seven card stud, I'd argue one must[0] remember cards that have been folded in the current hand. But certainly in all HE variants (that I'm aware of), counting and remembering is unnecessary. [0] It's necessary, but not sufficient.