Doing the same thing over and over again and expecting different results is not the definition of insanity

I recently heard Mike Greenberg of ESPN's Mike & Mike show say on air: "The dictionary definition of insanity is doing the same thing over and over again and a expecting different results."

Rob Lowe also sent out this tweet last week:

The definition of insanity: doing the same thing over and over, and expecting different results. Fire Mattingly. #Dodgers #MLBPlayoffs

— Rob Lowe (@RobLowe) October 16, 2015

The thing is, it's not.

It's a quote that Albert Einstein may or may not have said, and somewhere along the way people generally began to accept it as truth.  However, while that may be dumb behavior, it's not actually anything close to the definition of insanity:

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