Superficially they didn't add much. On a deeper level nobody really knows. The future could be all Index funds and bots trading historical patterns and could re

Superficially they didn't add much. On a deeper level nobody really knows. The future could be all Index funds and bots trading historical patterns and could result in poor investment choices which screw up the real economy. The dotcom boom was a great example that this happens already, nobody is sure if this new world is better or worse.