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Jacques Werth is a legendary sales expert who's book "High Probability Selling" has sold millions of copies. I doubt that he cares whether nitwits on this forum are making fun of him.
Really? I thought it was a joke, or a troll. Or a troll who was joking. This was for real, huh?? I thought it was a play on words, Jack worth, not worth jack... what do I know? I'm kind of a bumpkin from Iowa, who hangs out with rowdies in Texas.