Advice. also known as Self-help, Good-but-biased Opinions, and Solutions by influence is something few are good at but everyone wants to give, just so they can get their opinion across. It's advice that helps us decide what to do and decides that horror movie characters should never open that Door. It should be done by experts but since Advisor is not a protected title, anyone can claim they are one regardless of level of expertise. Same with Nutritionists.
Question: Why can't I own a Canadian?