Honestly, almost everything the ordinary person thinks economists think is wrong. Which is what makes teaching intro to econ such a challenge. The main message here is to realize you don't know nearly as much as you might think about what other groups out there think, especially marginalized and colorful groups. Doubt everything you think you know about the beliefs of satanists, theologians, pedophiles, free-lovers, marxists, mobsters, futurists, UFO folk, vegans, and yes economists.