And obviously there's been tremendous practical applications associated with this world -- things like the eradication of smallpox, the advent of a vaccine against cervical cancer, which we now know is mostly caused by human papillomavirus.
I očito postoje važne praktične primjene povezane s ovim svijetom -- stvari poput istrebljenja malih boginja, pojava cjepiva protiv raka grlića maternice, za koji znamo da ga najčešće prouzročuje humani papiloma virus.