Right! I made the dumb, typical error to write: "You simply do not have that in a static world." When I should have written: "This type of expressiveness is not

Right! I made the dumb, typical error to write: "You simply do not have that in a static world." When I should have written: "This type of expressiveness is not available in mainstream statically typed languages". With "freely composable" I mean that you can program with these schemas as they are just data structures and you only specify the things you want to specify. Both advantage and the disadvantage is that this is dynamic.