How to Find a Bad Expert

i'm cury poppy. I've researched hundreds of authors, speakers, fringe science providers, doctors and other experts. So we're going how to check some one's license. And a college affiliation. If some one says they used to teach at harvard, how do you figure out what that means? A check a business license. And finally, find lawsuits, which that's the most intense thing you can probably do of the four.