Human universals: 6 remarkable things I think are true of nearly all adults

October 20, 2023

Some remarkable things I suspect are true of nearly all adults: 1) We each hold some beliefs that are almost totally non-responsive to evidence involving some combination of our identity (who we are), our group, the nature of reality (e.g., God), or the nature of what’s good. Examples: • Many have an unshakable belief that they are good even as they harm the world (or believe they’re insufficient even though they’re altruistic and productive) • Most have an unshakable belief that t...

The Power of “Familiar Yet Different”

September 18, 2020

When trying new things, what we like (or benefit from) most is usually familiar to us, yet somehow also distinct. 1. Music: we prefer songs that are similar to others we like but that feel novel. If a song is too similar to what we know, then it's derivative or boring (like listening to the same music on loop), but if it's too novel, it is usually unappealing or dissonant. Music from other cultures can be hard for us to appreciate until we've listened to enough of it. 2. Learning: we lear...

Surprised? Update your model.

September 24, 2011

In order to make predictions, your brain must have a model of reality. This model is necessarily much simpler than reality itself. To see why, imagine that you are about to drop a baseball from waist height. Your brain can't possibly know enough about the atoms composing that baseball and the air around it to simulate what will happen at the atomic level. And even if your brain did have accurate knowledge about the atoms, using information at such a fine a level of detail would be extremely comp...

Keeping Ideas at a Distance Using Probability

August 11, 2011

We often talk about ideas by using phrases like "I believe X." But what do we mean when we say that we "believe" in an idea? Do we mean that we have 100% confidence that the idea is true? Let's hope not. Even statements that we all would say we very strongly believe, like "tomorrow the sun will rise", and "I am not a robot" we should not assign 100% probability to. While we can be very, very, very certain that the sun will rise tomorrow and that our brains are not computers, we cannot be abso...