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Eric Schmidt (c) Getty Images

On Thursday Eric Schmidt gave a fascinating talk on technological innovation, in which he warned that broad range of jobs that once seemed beyond the reach of automation are in danger of being wiped out by technological advances.

I raised two questions to neither of which in my view did I receive a good answer.

First, we see IT everywhere, except in the productivity statistics. It is really quite hard to reconcile the idea of a dramatic technology revolution with stagnant or near-stagnant productivity in high-income countries.

What is going on? Is most of the revolution in household production? Or is GDP even more mis-measured than usual?