[desireco42]

True, however it has been considered not true. There are example, Werner Heizenberg is one,

http://michaelnielsen.org/blog/malcolm-gladwell%E2%80%99s-ne...

that people made genuinely great discoveries without needing 10,000 hours, and there are other examples where people did 10,000 hours of deliberate practice without achieving results. I actually found a critique (can't really find it now) which convinced me that he fudges data to support his claims and sell his books, author examined his references that support MG claims and found many to not be quite supportive and that it is a pattern that is present in most of his books.

His books are entertaining read, well written and all, just not reliable scientific information.

There is discussion on Quora where some of the criticism is voiced as well: http://www.quora.com/Malcolm-Gladwell-author/What-are-some-c...