Peter,
That's a great question.
But, the question is even better in the context of a so-so golf course.
Often, I've been playing a so-so golf course and suddenly, wow, there's this great golf hole.
So you ask yourself. "How did it come about that the architect created so much mediocrity, yet, in its midst, he created greatness ?
And, "why couldn't he create more great holes ?"