I've thought about it over the years, but never pulled the trigger. This used to drive me crazy when I was younger. When an author who became "older and wiser"

I've thought about it over the years, but never pulled the trigger. This used to drive me crazy when I was younger. When an author who became "older and wiser" decided to make a new edition of the book in which they hedged all their bold claims with all the caveats that they had gained through experience. I always thought such old people were cowards. Of course, now I understand why they do it.