For a man with an impressive educational C.V., Ben Carson makes a lot of intellectual missteps. In his September 16th debate performance, he displayed a profound lack of foreign-policy knowledge; last Sunday, when he said, on “Meet the Press,” that he “would not advocate that we put a Muslim in charge of this nation,” he may have seriously crippled his campaign. Still, there’s one area in which Carson’s credentials have seemed unimpeachable. Many people assume that, as a successful surgeon, he has a solid knowledge of technical, medical, and scientific issues.

With the wide release of video from a speech that Carson made to his fellow Seventh-Day Adventists in 2012, however, it’s becoming clear that there are significant gaps. In the speech, he made statements on subjects ranging from evolution to the Big Bang that suggest he never learned or chooses to ignore basic, well-tested scientific concepts.

h/t: The New Yorker