the DAI project (originally eDollar, which is now intended to be built using DAI) which tracks a value which I think is like, some basket of different currencie

the DAI project (originally eDollar, which is now intended to be built using DAI) which tracks a value which I think is like, some basket of different currencies, is being worked on. I don't really understand the mechanism by which it is meant to track the price of the basket of currencies, but I haven't seen many criticisms of it?