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If you practised anything for long enough, would you become a pro? Author Malcolm Gladwell popularised the idea that if you devote yourself to anything from chess to playing an instrument for 10,000 hours, you will become an expert.

But where did the idea come from, and is it true? More or Less tells the story of how a paper published in 1993 went on to spark a debate – is practice enough, or do you need innate talent as well?

David Epstein, author of The Sports Gene and Malcolm Gladwell explain their views.

Plus, we hear from a photographer who quit his job to concentrate on trying to become a golf pro, despite claiming to have no natural talent.