We all know people who like to demonstrate their great knowledge by using words most people don’t understand. In my opinion, those people are showing their lack of knowledge about a particular subject, and by using rarely used, difficult words they keep others from engaging with them and exposing them.
Simplicity reigns. It is possible to take a difficult subject and discuss it in ways that keep people interested. This encourages dialogue, even allowing opposing views to come out. This is how you connect with others and grow.
You can be the smartest person in the room without telling anyone that you are. Keep it simple…