With each successive new player winning a major championship - 16 different guys in the last 16 majors - new theories seem to develop about why the trend has taken shape.
Rory McIlroy offered his two-pronged guess on Wednesday at the PGA Championship.
"I think the reason that it's been like this, the fields are much deeper," he said.
That's the prevailing theory. Fields are deeper, yes, but why? That's the second par of McIlroy's theory.
"Partly because the guys have just got better and have worked hard and they are putting more into the game, you know, physically, mentally, practice, technical, everything," he said. "But I think one of the big things is the technology. I think 25 years ago, you had the really good players that could play with basically anything, and nowadays, the technology lets maybe some of the lesser players catch up to the better players. And I think that's why you see so many more guys winning these days."