As a dietitian, I always tell people to think of the brain as the mastermind behind almost everything — our thoughts, memory, focus, movements, breathing, heartbeat — and that certain foods can help make it stronger, sharper and smarter. Our brain and diet also play a key role in longevity.
If you find a dimension intereseting, we recommend you pick up one or two facts that you find intriguing and place them into your memory. That way you will have 2nd degree information about the topic if it comes up in conversation.
Accordingly, you can do the same with others as well.