"Politics, like religion, is a topic where there's no threshold of expertise for expressing an opinion. All you need is strong convictions"

Do religion and politics have something in common that explains this similarity?

One possible explanation is that they deal with questions that have no definite answers, so there's no back pressure on people's opinions.

Since no one can be proven wrong, every opinion is equally valid, and sensing this, everyone lets fly with theirs.

But this isn't true. There are certainly some political questions that have definite answers, like how much a new government policy will cost.

But the more precise political questions suffer the same fate as the vaguer ones.

I think what religion and politics have in common is that they become part of people's identity, and people can never have a fruitful argument about something that's part of their identity. By definition they're partisan.

Which topics engage people's identity depends on the people, not the topic.

So it's not politics that's the source of the trouble, but identity. When people say a discussion has degenerated into a religious war, what they really mean is that it has started to be driven mostly by people's identities.

More generally, you can have a fruitful discussion about a topic only if it doesn't engage the identities of any of the participants. What makes politics and religion such minefields is that they engage so many people's identities.

The most intriguing thing about this theory, if it's right, is that it explains not merely which kinds of discussions to avoid, but how to have better ideas.

If people can't think clearly about anything that has become part of their identity, then all other things being equal, the best plan is to let as few things into your identity as possible.

Most people reading this will already be fairly tolerant. But there is a step beyond thinking of yourself as x but tolerating y: not even to consider yourself an x. The more labels you have for yourself, the dumber they make you.

Paul Graham

Venture capitalist