oh you have many possibilities but in fact alpha zero is just worse at it and it doesn't know so they also look at the intersection of opening trees like if you change a rule how does this change um change the the kind of how does this change the the initial game so a lot of these grandmasters they learn by heart all of these opening trees the initial moves of a game how much would they have to relearn there is a negative correlation between the overall opening diversity and decisiveness as decisive variants