Maths & Marketing come together in marvelous shapes. This is one of my favorite curves and to be fair is more about psychology, but it talks of relationship between humanistic expectation and and knowledge accumulation and is really useful for managing team of experts and their onboarding.

It's also very enlightening around certain people in current affairs. There are those people who confidently think they know everything and are right. This is because when awareness of knowledge is limited then they think that is all there is to know. Dunning & Kruger saw the correlation between those with limited experience, world view or education tended to overrate their IQ. Conversely those with a lot of education or experience was aware of how much they still had to learn or understand. Help people through the very normal feeling of imposter syndrome felt in the valley of despair. Avoid anyone who prefers to stay on the Mount of Stupidity.

"Eliminating consumer choices can greatly reduce anxiety for shoppers" - Paradox of Choice

A loose connection to Marketing is the paradox of choice. Your product or service may be complex and amazing but not everyone wants to or can take it all in. Unless you are aiming for the intellectual niche market don't make they drink from the hose.