To disagree well you must first understand fully

Charlie Munger always says you must not get into a debate unless you know the other guy’s side of the argument better than he does.

First, listen.

Grapple with the issue on the table.

Look at it from the perspective of all parties.

Do everything you can to truly understand the matter at hand.

Once you’ve done that, go ahead and disagree.

Until then, listen.