Being wrong
The most effective system we have developed for learning as a species is the scientific method.
This is the process by which we ask questions, make observations, develop hypotheses, collect data, analyse, draw conclusions, report, and then ask new questions.
We are rewarded at school for the 'right' answers to standardised questions, not for asking questions.
The scientific method shows us that we learn by starting from a place of curiosity, and that we learn the most when our previously beliefs are proven to be wrong.
The learning process requires that we are wrong.
At school we are wired to fear being wrong or making mistakes, and we continue this fear into our adult lives.
We would rather be right that be kind, we look for evidence to support our existing beliefs, and surround ourselves with people that we know already hold our views.
Imagine if we were taught how to learn, and celebrated being wrong a bit more often.