I think philosophers who are good at philosophy do change their own minds and do seek out ways to change their own minds to match what they know and reason (they, if nothing else, strive for reflective equilibrium). This is of course not what everyone does, and academic philosophy is, in my opinion, suffering from the disease of scholasticism, but I do think philosophers on the whole are good at the weaker form of double crux that takes two people and that they remain open to having their mind changed by the other person.
I think philosophers who are good at philosophy do change their own minds and do seek out ways to change their own minds to match what they know and reason (they, if nothing else, strive for reflective equilibrium). This is of course not what everyone does, and academic philosophy is, in my opinion, suffering from the disease of scholasticism, but I do think philosophers on the whole are good at the weaker form of double crux that takes two people and that they remain open to having their mind changed by the other person.
What percentage of professors of philosophy do you consider to be good at philosophy?