Answer:
He wants to let the audience know that mastering the basics is key to achieving goals.
Step-by-step explanation:
The question above is related to the speech entitled "Achieving your Childhood Dreams," by Randy Pausch.
Along his speech, he mentioned about his childhood dreams of playing in the National Football League and becoming an author of an article in the World Book Encyclopedia. However, he didn't pursue such goals in life and by mentioning it, he wanted the audience to know that "mastering the basics is key to achieving goals."
Although he had a coach who'd helped him master football, he still didn't become part of the NFL. However, for him, he was able to have a valuable experience which he treasured.
Such experience allowed him to master the basic skills which are very important in achieving one's goal.
So, this explains the answer.