But Resende shows that the details of modular manufacturing are not easy to master.

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It's always hard to say how much this kind of personal branding contributes to the success of a business, especially one like fish-farming that's easy to enter but hard to master.

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Adobe Ideas is an easy-to-master, vector-based tool for drawing.

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Because we have been unable to define effective teaching, we now reward teachers for easy-to-measure proxies like master's degrees and seniority, even though there is no evidence that these things help students learn.

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And so it's quite easy to come up with terms like master.

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It sounds easy, but it took Murray and Djokovic years to master it as Federer and Nadal piled up major title after major title.

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But once you master them you'll find most of these options are easy to access with just a tap or two.

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