Everyone has an opinion on everything.

In fact, we’re all pretty sure of our opinions. Social media is polarizing. We get trapped within our own algorithmic bubbles, consuming information that only reaffirms our beliefs.

Should we have strong opinions on every issue?

Munger teaches there's work required to have a strong opinion, by understanding both sides of an issue first. Seek competent people to hear their opinion, and understand arguments that counter your views.

The ability to destroy your ideas rapidly instead of slowly when the occasion is right is one of the most valuable things. You have to work hard on it. Ask yourself what are the arguments on the other side. It’s bad to have an opinion you’re proud of if you can’t state the arguments for the other side better than your opponents. This is a great mental discipline.

We have a tendency to latch onto our own beliefs even when confronted with conflicting evidence. There’s actually a psychological phenomenon for this, the Backfire Effect.

Changing your mind is a skill.

You have an edge if you learn to do it as soon as necessary.

We all are learning, modifying, or destroying ideas all the time. Rapid destruction of your ideas when the time is right is one of the most valuable qualities you can acquire. You must force yourself to consider arguments on the other side.

Doing the work before forming strong opinions means being more tolerant and open-minded.

Intolerant people see every issue as black and white, good vs evil, but in reality most issues are gray. It's hard to see that without arguing both sides.