If it's not a parody, it's yet another sign our society is in rapid decline:
The Stone age is the prehistoric time before the Age of Metal. It is divided into two parts; Paleolithic and Neolithic. During the Paleolithic age, man harvested wild plants and animals for food. Agriculture began in the Neolithic age. The dates of the Stone age are debated. Biased historians often give older dates than can be proven by archaeology.
Damn those biased historians! There were too dinosaurs on Noah's Ark!