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.
Dakteris Kinzijs bija dzirdējis — 20. gadsimta 40. gados  tā bija tāda kā teorija — ka spēks, ar kādu  sperma tiek mesta pret dzemdes kaklu, bija auglības noteicošais faktors.