Why A.I. will never be truly useful

GUEST: By now, we’ve all heard of Silicon Valley’s shiny new technology: Artificial intelligence and chatbots. They bring the promise of an industry-wide transformation that many believe will reach the scale of the personal computing industry or the commercial internet.
Funding in artificial intelligence startups has increased more than fourfold — to $681 million in 2015, from $145 million in 2011 — according to the market research firm CB Insights. The firm estimates tha