In 3000 BC, artists, thinkers, lawyers, doctors and engineers (to what extent they existed) were all part of one (mostly parasitic, but in some ways quite useful) caste: priests.
People tend to think of ancient priests as charlatans, but they were also the people who held onto all the knowledge: that if you chew these "magical" leaves while tilling the fields, you don't get tired; if you plant when this "divine" star is rising, you get the best results. The emergence of artists, engineers, et al, apart from a priesthood didn't emerge until the birth of philosophy in the first millennium BC.
People tend to think of ancient priests as charlatans, but they were also the people who held onto all the knowledge: that if you chew these "magical" leaves while tilling the fields, you don't get tired; if you plant when this "divine" star is rising, you get the best results. The emergence of artists, engineers, et al, apart from a priesthood didn't emerge until the birth of philosophy in the first millennium BC.