We would not have self driving cars or any other useful robots in quantity. China would wall itself off from the western parts of the internet to an even greate

We would not have self driving cars or any other useful robots in quantity. China would wall itself off from the western parts of the internet to an even greater degree. Blockchain will never find widespread use. I thought face recognition tech would be more widespread, but it turns out that its type 1 and type 2 error rates are far too high for many applications. I also believed that what Theranos was selling was feasible. I'm more impressed by what hasn't happened than what has.