Intellectual honesty and humility is a good heuristic to look for if one is blindly assessing arguments. Even though there's a chance he could be dead wrong on

Intellectual honesty and humility is a good heuristic to look for if one is blindly assessing arguments. Even though there's a chance he could be dead wrong on a given topic, the fact that a person with those traits has arrived at a conclusion tends to suggest there's an honest case to be made for it. In other words, you could do worse than finding honest people and listening to them.