In my neighborhood, everyone had an opinion on the local cantor. You didn't go to a synagogue to listen to the rabbi's sermon. You went to listen to the cantor. It was like a concert.
I think that lawyers are terrible at admitting that they're wrong. And not just admitting it; also realizing it. Most lawyers are very successful, and they think that because they're making money and people think well of them, they must be doing everything right.
In the Pentagon Papers case, the government asserted in the Supreme Court that the publication of the material was a threat to national security. It turned out it was not a threat to U.S. security. But even if it had been, that doesn't mean that it couldn't be published.