in our experience thinking about it adding any one of those things made the model much harder to work with so in order to in order to make progress beyond what we had I think part of the question is going to be you know where you get technical simplicity despite having at it in these communities additional complications and I think one thing for us even with the model that we had that is very helpful is to use awesome products to simplify the analysis this is something which is now by now very standard in in analyzing