I certainly agree with what you said. You have very nice explanations. other than them arsimed water lifting force. Newton's ground-breaking meeting. These are all random things. people always have different things in their lives. maybe even now an invention stands in the way. we just do not see it. people who explain what these differences are are called inventors. This thing is immortal to the thing. for us to sign a treaty altogether. just to be more careful. we need to notice the differences in our surroundings. @sean-king