Morning Scepticism: Experts

Occasionally someone from outside a discipline can come in and make a ground altering contribution, and experts can find themselves going down the wrong path, and experts can and sometimes do have their political and religious beliefs influence their thinking on their particular level of expertise. But even with all that pointing out a grade-school error and alleging a conspiracy is not going to take down well-established scientific theories. If you want to take down a subject you're going to have to train in it, and even then who is the ideologue?