The first revolution in the emergence of society according to Rousseau is the building of huts. Here one also has the beginnings of property. According to Rousseau, luxuries are addictive. Conveniences also soften the body and mind, so one becomes less able to satisfy one's own desires by one's own efforts. Already one has a transformation of desire.
Humans come to have attitudes and attachments toward others and desire for the regard of others.
One wants to be esteemed and regarded more highly than others. With ideas of virtue one also gets the possibility of vice. We find competitions for status and status rankings. Romance leads to romantic rivalry, jealously, and cruel deeds of jealousy and revenge. Agriculture and metallurgy.