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Mastering a programming language by not programming?

The computer scientist Peter Norving argued in his essay Teach Yourself To Program in 10 Years that you need about 10,000 hours of practice. But Jeff Atwood argued in his post How To Become a Better Programmer by Not Programming that he believes the only way to become a better programmer is by not programming. This articles are in opposition. Is there scientific evidence to prove the Jeff Atwood approach?