english: The thing is, though, that we've been building on the mental achievements of those that came before us for so long that it's easy to forget that certain abilities haven't already existed.
non_english: Međutim, stvar je u tome da smo gradili na mentalnim postignućima onih koji su bili tu toliko davno pre nas da je lako zaboraviti da izvesne sposobnosti nisu već postojale.