We take our mental capabilities for granted. I don't mean how clever (or dumb) we are compared to someone else, but how our cognition works, how it is formed by our experience, and how uniquely we can think about the world around us.
A great book that touches on the subject. https://www.gatesnotes.com/Books/Range
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.