The R&A and USGA said that they are concerned about the development of green reading equipment. “Success should depend upon the judgment, skills, and abilities of the player,” the statement said. English Ian Poulter said that the rule totally makes sense as he was also opposing the use of green books.
The use of detailed maps of putting surfaces is also time-consuming and slows the pace of the game. The question also arises is this truly in the spirit of the game. In a game which has come under criticism recently for the pace of play and R&A and USGA working to increase the pace of the game, this can really be a good move to stop players going by the books at the green. This will mean that they will have to rely on themselves or their caddies.