“Obviously there is a tremendous amount of guess work involved when filling in the variables.”
Yeah... and understatement to be sure, because it’s all pretty much guesswork.
The more I’ve learned about how the earth-moon system works the more I come to appreciate just how unique our planet may be — and that implies that this particular creation (if you’ll allow the term) is pretty unique.
Just think. If there were only one unique creation per galaxy, how many billion of sentient life forms there would be?