 Advocates of the Atlas Principle include, besides its eponym, Yeom (1998), Zeevat (1999), and Blutner (2000). One thing to note about the Atlas Principle is that it does not necessarily vindicate the PGA across the board: while the predictions made by the Atlas Principle will tend to comply with the PGA, they don’t have to. However, it is surprisingly difficult to say where exactly the Atlas Principle deviates from the PGA, because this depends on various extraneous factors; see Geurts (2000) for discussion.