Why We Fall For It

Decide whether someone else really knows their stuff or is just copying others.

Ask them naive but relevant questions. When you apply your knowledge of the Feynman Technique, you know they should be able to explain it to you in simple terms and must be able to make educated analogie...

When telling someone he's wrong, don't be too direct with your approach:

Before jumping right in with something like, “This is really wrong!”, try saying, “It’s evident that you put a ton of time and effort into this project, and it looks great!”

Good personal writing can encourage a real connection and brighten someone's day, be it a birthday day card, snail mail, a text message or a work email. 

When done right, it feels like someone is really noticing you.