Many people posed me the same qquestion:
What do I have to learn project management knowledge?
My senior or predeccesors do NOT have to learn all these stuff and yet they have completed most of the projects?

Now, I am writing a short speech to JKR 2nd PM Course.
My immediate answer : My grandmother did not go to school.She is almost 90 years old and still lives till to-day.
But then compare what kind of life she lives to my life who has been to school and UK for my degree.

Just wait and I will try to answer the questions.