Summary: On today’s Gist, is Sen. John McCain really the greatest political leader of all time?<br>Have you heard of face gyms? Beauty gurus are rushing to recommend exercises for the forehead, chin, and cheeks to look younger and healthier. Our expert bullshitologist <a href="https://twitter.com/mkonnikova">Maria Konnikova</a> is here to scrutinize the case for facial toning. Konnikova is a contributor to the <a href="https://www.newyorker.com/science/maria-konnikova">New Yorker</a> and the author of <a href="http://www.amazon.com/dp/0143109871/?tag=slatmaga-20"><em>The Confidence Game</em></a>. <br>In the Spiel, Salena Zito’s populist divining rod.
