Think and imagine for a moment that this was you, in Neil's shoes...
Now that you've watched it, think for a moment and imagine what would happen if you found that you could contact other scientists directly, ask them questions about anything you wanted, and get answers.
Maybe they won't give you their home phone numbers - but maybe they will give you more than you expect.
Ask questions. Ask those who you respect questions, listen to the answers, and learn.
It's okay to not be certain about something or to already hold firm convictions about something.
The point is to keep asking and learn, because you never know what you are going to get back.
If you had this kind of opportunity, what questions would you ask? Who would you ask?