Since I was in Manhattan at the time, I attended this really cool event, which featured lots of really smart people basically knocking their heads against the (intractable) problem of AI reasoning based on doing entailment from semantic knowledge, obtained from texts.
It was fascinating to see the attacks that everyone was using to try to slay the dragon. Just about every approach you could imagine was presented. Everyone with something concrete was susceptible to questions - how do you deal with temporality, what about metaphor, etc - to which they would say, "I haven't thought about that yet", or even better, "well we haven't considered these issues yet, but we are about to field test out system with a large company and so we will soon know if it works".
The emperor truly has no clothes.
Still, for someone with lesser goals (a tool to support human reasoning) the mechanics that were presented were fascinating.
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