how many things you can explicitly write what he or she do or does really as a president. We cannot do this. So we are assuming that certain things they will do because they are morally responsible individuals. I cannot be explicit about them because if I make it explicit then it becomes essentially routine as you said that yeah you can write it down this particular chocolate came from this particular tree and this can be eaten by only this particular individual but then how many of them you write that is where essentially necessary sufficient conditions miserably fail particularly in the system when those are coupled. It can be fine. Right now we say, like if you have asked me, the best law that we have is Newton's laws of gravity. What is it that basically Apple fall? And Apple was falling before Newton. We just did not understand this. He was brilliant to find out a particular law that applies everywhere right now. Whether I'm in Bangladesh or in Boston, Apple falls and I know that I can explain it by gravity. So that's a law which is, I would say, the physical law that is replicableicable verifiable everywhere you go. Now to take an example for water that I use is that water flows usually downhill because of the energy gradient. That's the physical law but water also flows uphill. For example water flows uphill in the American West to money in my home on the second floor because I put a pump. Otherwise, water cannot go to my second floor. By gravity should go down. How come