> Even without that, after switching, should you switch back? The equation given argues you should switch back, so obviously the equation must be wrong. Ah, th

> Even without that, after switching, should you switch back? The equation given argues you should switch back, so obviously the equation must be wrong. Ah, that observation is very clever! Even if you let yourself be bamboozled by the logic for switching, there is no reason then not to switch again by using the same logic. And again.. and again!