The brain has a good error rate. But, the point is, you can function with that error rate. Animals do a lot of guesswork.

Sometimes guessing is the best you can do. In the real world, we guess all the time and it serves us well.

Human beings, from a mathematical perspective, are fairly limited. Two and three dimensions, maybe five, and we're OK.

When you walk around, your vision system is processing a whole bunch of signals in milliseconds and judging that a visual object is a wall, or an imminent cliff, or a car heading towards you. This might be disturbing to a lot of people, but some of those guesses are errors.

There is no such thing as zero uncertainty.

Humans are very good at making algorithms work eventually.