Extending the brain

Tens of thousands of years ago we reached a point when we needed to know more than could be stored in our brains.

We were forced to invent ways of storing information outside of our body:

• Carving in stones and bones
• Painting on bamboo and silk
• Scratching onto wax

We have come a long way since then. In the last millennia we advanced to printing books and storing information digitally.