I suspect that these rules are often rough proxies for player age, which is in turn a rough proxy for player experience. The polarity of the test is aligned wi

I suspect that these rules are often rough proxies for player age, which is in turn a rough proxy for player experience. The polarity of the test is aligned with whether first player has advantage or disadvantage in that particular game, to give the less-experienced player the advantage. (Just a theory! No hard evidence beside observed correlation with player order rules for subsequent rounds in some games.)