english: In fact, this is exactly the kind of question we're faced with when we try to understand the Indus Valley civilization, which existed 4,000 years ago.
non_english: V skutočnosti je to presne typ otázky, ktorej čelíme, keď sa snažíme pochopiť civilizáciu z údolia rieky Indus, harappskú kultúru, ktorá existovala pred 4000 rokmi.