english: And the facts are, we didn't know the answer to that even as recently as 15 years ago, and in fact, we really didn't know it even as recently as six months ago.
non_english: Faktom je, že odpoveď na túto otázku sme nepoznali pred 15 rokmi, vlastne, sme ju nepoznali ani pred šiestimi mesiacmi, ale teraz ju už