As a father of three School-aged children who participate in extracurricular programs, I can appreciate the value of repetition. Whether it's the opening stretch routine at tae kwon do or performing scales during each piano lesson, those recurring activities develop muscle memory that allows the body and brain to perform on autopilot eventually. The same holds true in education, where concepts like spaced repetition--a technique that increases intervals of time between reviews of previously learned material--to help a student master the information, are becoming ubiquitous.

For decades, repetition has been a widely employed tactic within marketing and advertising, as evidenced by that TV commercial shown 10 times during a football game, or the flyer I get in the mail every month about switching to Verizon Fios for my Internet, cable and phone. Marketing guru Dan Kennedy has long been a proponent of sequential marketing and recurring contact, based on the fact that people tend to have short attention spans and are forgetful. "Most business people 'miss the boat' by failing to maintain frequent contact with their customers," he blogged recently. "There is a need to stay on the top of your customer's consciousness--after all, out of sight; out of mind."

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