There are biases that affect the quality of advice we get every day of our lives. And not just financial advice.
When a real estate agent shows you houses for sale, they are working for the seller, not you. This affects which properties you are shown and your ability to negotiate the best price.
(This is why buyer’s advocates have become popular. As you are paying them to find your ideal property, your advocate’s interests are aligned with yours.)
In assessing the quality of any advice, it’s worth considering which party the seller is working for: you or the owner of the product.
There are other more subtle influences on the advice we get. While the medical profession manages potential conflicts by operating under a professional code of conduct, your GP may be influenced to prescribe some brands over others, due to a relationship with the pharmaceutical company (this could be done unconsciously…see below).