Doctor Kinsey had heard -- and there was a theory going around at the time, this being the 1940s -- that the force with which semen is thrown against the cervix was a factor in fertility.
El doctor Kinsey havia sentit a dir... hi havia una teoria de l'època, a mitjans dels anys 40, que deia que la força amb què el semen es dispara contra la cèrvix era un factor de fertilitat.