The topic of marking/lifting/cleaning on the putting green was brought up by several on pages 3 & 4 of this thread, but I'd like to bring it up for additional discussion. I have the third edition of Tufts. The second great principle of golf (in chapter 6) is to "put your ball in play at the start of the hole, play only your own ball and do not touch it until you lift it from the hole." Later on in chapter 6, he quickly mentions the exceptions to this principle (including cleaning [rule 21]) without providing any discussion. Did I miss something? I didn't see any further discussion on this topic in any other chapters of the book nor any rationale why the exceptions to this principle (particularly lifting and cleaning on the putting surface) should be part of the rules. Did he go into any more detail in the first or second editions? Obviously, this book doesn't cover everything, but it feels like his lack of discussion is trying to hide an exception that he cannot rationalize. Why did the R&A/USGA allow for lifting and cleaning on the putting greens? Was it simply to eliminate stymies? Does anyone have any insight?
On top of that, and per the PM I've already sent you… this is a golf site. If you're only here to talk about NPV, please find another site to talk about it. This is, first and foremost, a place to talk about golf.