It is called "The Civilizing Process". It started in the middle ages, right at the time when belching and passing gas became unacceptable in social gatherings.

It is called "The Civilizing Process". It started in the middle ages, right at the time when belching and passing gas became unacceptable in social gatherings. More here: http://www.amazon.com/Civilizing-Process-Sociogenetic-Psychogenetic-Investigations/dp/0631221611 http://www.amazon.com/Civilizing-Process-Sociogenetic-Psycho...