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By Dennis McCafferty  |  Posted 01-18-2012

Quiz: The Seven Most Disruptive Thinkers of All Time

Q: Who wrote "The Four Steps to the Epiphany", a book considered a bible for innovators.?

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A: Silicon Valley entrepreneur Steve Blank, who wrote that a start-up is a "temporary organization searching for a repeatable and scalable business model"

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Q: Which Harvard Business professor warned that dominant organizations can be vulnerable to disruptive innovation that establishes a simple, accessible or affordable solution?

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A: Clayton Christensen, who co-founded CPS Holdings with several MIT professors in the 1980s.

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Q: Who said: "The customer rarely buys what the company thinks it is selling him"?

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A: Peter Drucker, who also said writers used the term, "guru," to describe him "because ‘charlatan' is too long to fit into a headline."

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Q: She tells innovators to start with an answer, then work backward to map out assumptions needed for that answer to work. Who is she?

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A: Columbian University's Rita McGrath, who co-introduced the concept of "discovery-driven planning," which encourages testing critical assumptions and adjusting plans based upon what is learned.

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Q: Which former Procter & Gamble CEO insisted that innovation could be managed and measured?

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A: A.G. Lafley, who promoted the mantra, "Consumer is Boss" while introducing new P&G brands like the Swiffer.

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Q: Which Legg Mason giant stresses that breakthrough insights can arrive from applying lessons from non-obvious fields to a problem?

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A: Michael Mauboussin, considered one of the foremost world experts in behavioral finance.

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Q: Who famously described genius as "1% inspiration and 99% perspiration"?

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A: Thomas Edison. With 1,093 U.S. patents, he's actually considered just the fourth most prolific inventor in history.