That is beautiful. Thank you for sharing it. I'd like to do the same for me one day, one for me.. and one for my daughter (she's six).
I'll keep soaking in all the info from those who share here, and then hopefully be able to challenge the Profs one day with a hypothesis of my own.
These thoughts are just mine, not right, not wrong, just thoughts. Invest in what you believe in, not what I believe in. Do your research, and invest in the facts.