I see it as a way to guarantee that a value is... well constant since everytime it is used it is re-evaluated.
realistically, we all do it the way you are doing it now.. we always have been. But this promises to ensure that we do not accidentally reuse a var somewhere a screw something up.
At least until Ruud provides real consts
I still think it uses too much overhead... creating all those functions for each const and then calling that funct each time a const is used.
