After reading the book, the summary is
quite simple. Human endeavor should not stop because we can reach a new summit.
And there is (almost) no limit in human capabilities unless we stop. Simply
putting 10,000 hrs would not be sufficient if you do not spend 10,000 hrs
carefully in a focused way.
I could not agree with the author more on
the issue. It is a good insight in learning. However, the book is a bit lengthy
to convey such a simple message.