Hm...I personally find it hard to divine much about Norvig's personal views from this. It seems like a relatively straightforward factual statement about the state of the field (possibly hedging to the extent that I think the arguments in favor of strong AI being possible are relatively conclusive, i.e. >90% in favor of possibility).
When I spoke to Norvig at the 2012 Summit, he seemed to think getting good outcomes from AGI could indeed be pretty hard, but also that AGI was probably a few centuries away. IIRC.
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