Here’s a meta question to the author: Having been around the circuit once, do they at least feel a little more humble about their opinions this time around, or are they just as strong but only in a different direction? :-)

IMHO, while the author has undoubtedly grown wiser, I think there’s just as much truth to their earlier opinions as the later ones; the value lies in being able to disambiguate the context in which each is valuable — not so much in trading one set of opinions for another. That humility, to me, is the bigger takeaway.