It's brutally difficult, to not be snarky, but imagine spending a decade in training for the completely wrong sport.
This man now knows 100 exotic, high-tech, bizarre, kinky ways to not-impregnate his own fertile, female mate. Apparently, it's not possible to simply turn that knowledge around and achieve the opposite effect.
He's off reading articles and asking for advice. Probably needs to complete a Ph.D. in Reproductive Studies, to come to the conclusion that the appropriate lubricant is a glass of good red wine before bedtime and the rest just sort of takes care of itself.
Imagine if our forefathers had been that smart. None of us would be here.
There are so many options! How ever could you know what to do?! This is all so horribly complicated!
/snark