Tools & manufacturing · c. 73,000 years ago

Microliths

Tiny standardized blades set into handles and shafts.

Small backed blades from Pinnacle Point, South Africa, date to about 71,000 years ago. Replaceable inserts made light, repairable composite weapons and knives possible.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

What it led to 1

Bow and arrow 64k BCE

Related measurements

The dashed line marks when it first worked.

World population over a million years Latest: 6.27k million people (2000) Source: DeLong 1998, table 'Total World Population' (Kremer series); Kremer 1993, Population Growth and Technological Change: One Million B.C. to 1990, QJE 108(3)

World GDP over a million years Latest: 41k billion 1990 international $ (2000) Source: DeLong 1998, Estimating World GDP, One Million B.C. - Present; Wikipedia: Gross world product (DeLong table, cross-check)