> and if it was reasoned well enough he'd have changed his mind.

In my experience, motivated reasoning rules the day. People have an agenda beyond their reasoning, and if your proposal goes against that agenda, you'll never convince them with logic and evidence. At the end of the day, it's not a marketplace of ideas, but a war of conflicting interests. To convince someone requires not the better argument, but the better politics to make their interests align with yours. And in AI there are a lot of adverse interests you're going to be hard pressed to overcome.

“It is difficult to get a man to understand something, when his salary depends on his not understanding it.”