evidence: The real problem with this quote is that it’s always misquoted! Most believe the quote to be: . . . doing the same thing over and over again and expecting different results. The problem with this misquote is that, logically speaking, one can, and usually does, do the same thing over and over, getting different results each time. The Laws of Thermal Dynamics teach us this, and it is the foundation of Chaos Theory. For example, when someone shuffles a deck of cards over and over, in exactly the same way each time, the odds of the top card being the ace of spades each time are astronomically low; and each time the cards are shuffled the odds get lower. Therefore, one should expect different results. Einstein most certainly did not say this version of the quote–he would have known better than that! This isn’t the definition of insanity, it’s the definition of the Laws of Thermal Dynamics. The actual quote, whoever said it, is: THE DEFINITION OF INSANITY IS DOING THE SAME THING OVER AND OVER AND GETTING THE SAME RESULT, BUT EXPECTING A DIFFERENT ONE.