> "I'm just wondering why we suddenly need so much technology to solve a problem that's always been with us [...]" Humans have been around for hundreds of thou

> "I'm just wondering why we suddenly need so much technology to solve a problem that's always been with us [...]" Humans have been around for hundreds of thousands of years, but only within the last ten thousand have we been living in cities with population densities even close to that of Banupur (for instance). I'd reckon that these kinds of sanitation problems are actually very new to humanity, at least from a historical or evolutionary standpoint.