re: #195 GeneJockey

Oh, but there are so many variables at work! Think how many people have difficulty conceiving when they try, plus there’s timing of a woman’s cycle, the small numbers of sperm leaked, phases of the moon, etc. It could be that the events where ‘perfectly practiced’ it still leads to pregnancy are essentially jackpot events, where everything was JUST right.

Those variables are consistent across contraception types, though, so I’m failing to see the relevance of them being many.