Table 1. Model timeline (not shown to scale).

Early Holocene	⇒	Neolithic transition	⇒	Industrial revolution	⇒	Present day
10,000 B.C.		8,500-2,500 B.C.		≥A.D. 1750		A.D. 2000
Nomadic hunting-gathering		Agriculture and animal husbandry		Mass production		Unprecedented prosperity (for some people)