For the same reason people today make corn field circles: humans are a playful species. “Hey guys, remember last year’s Peruvian Burning Man where we got drunk

For the same reason people today make corn field circles: humans are a playful species. “Hey guys, remember last year’s Peruvian Burning Man where we got drunk and drew a large phallus on the sand? Let’s do an even bigger one this year!” Our technology and day-to-day may have evolved, but the human brain is pretty much the same today as it was 10000 years ago.