No! Not by any means. But don't take them at their word. As with everything you read (or hear, or see . . .) you should question it. It should encourage you to

No! Not by any means. But don't take them at their word. As with everything you read (or hear, or see . . .) you should question it. It should encourage you to investigate more of the subject at hand, to look up the references (no references is a bad sign). If nothing else, it can provide a valuable lesson in skepticism and the depth required to truly understand these fields; you didn't really think that such complex topics could be properly addressed in a twenty minute TED talk or a single non-reference book, did you? These things are teasers, meant to whet your appetite or let you know that there is a broader world out there.