A P P E N D I X

A Brief History of Thought

Abridged, expurgated and missing a few bits.

2 400 00 BC
Stones are used as tools.

1 400 000 BC
People learn to make fire.

600 000 BC
Homo sapiens evolved to physically resemble people today.

45 000 BC
Language developing.

40 000 BC
People start to travel around the world.

35 000 BC
Calendars being kept.