I wish I could provide such an example in good conscience, but a (very broad) NDA with a former employer precludes me from doing so. They might not mind, and he might not mind - but I would have gone back on my word, which I definitely would mind.

I know that this reduces the strength of my argument to essentially "nuh-uh!" ... sorry. But I will tell you that, when he says (in that keynote address) that he is willing to explore the possibility that he could be wrong - I believe that he is being completely honest.

As to your description of his "singular focus and unwillingness to consider the validity of alternative perspectives" - that just doesn't seem accurate at all; it describes neither this speech nor his observable approach at large. It does, however, remind me of a funny pinterest picture/quote:

"Once you hate someone, everything they do is offensive. 'Look at this bitch, eating those crackers like she owns the place'. "