It's a lifestyle that is not extinct. I've seen houses that were so full of
rubbish there were
only some narrow walkways between the mounds and some rooms were literally
the ceiling with rubbish.
Geoff in Oz
By the later Neolithic, "you have really big villages, even double-story stone houses, and
up to thousands of people living in single village," Edwards said. "It'll become fairly
obvious to them after a while that epidemics will spread rapidly through lack of
sanitation, sewage and so on. They'll get pretty aware that 'we can't live like this
London caught on to this in the 18th century, iirc.