It all began with Adam. He was the first man to tell a joke--or a lie. How lucky Adam was. He knew when he said a good thing, nobody had said it before. Adam was not alone in the Garden of Eden, however, and does not deserve all the credit; much is due to Eve, the first woman, and Satan, the first consultant.
As one who works in the IT consultancy business, I quite regrettably cannot help but chuckle at the weight of the truth in this assertion.