system in that you see how many unnecessary things are there or how many things are not straightforward how many things aren't the easiest thing that you would do when you would go about and do what they did okay so then you this concludes this model or method usually the student section is called like method or model or something like this and you go to experiments now the main question I have so far or I have maybe I have some more questions about the model itself that I haven't been able to pick up from this section which is not the