Decent article, anything quoting Richard Feynman is generally good as he was both a great scientist and thinker. A lot of scientists do tend to get attached to their theories as they have so much effort invested in them, think it was Max Planck who said the only way things change is when the older generation die off and are replaced by people with new ideas.
This is strange. I watched a documentary recently about this deepmind crowd and how they developed an AI that could beat some european champion go player.