Science is built upon repeatable experiments that can be used to test hypotheses. It is not built on axioms and logical extrapolation- those are used to form new hypotheses but they are insufficient by themselves. We don’t decide something exists, we hypothesize that it exists and make predictions based on that hypothesis. If experimental results line up with our predictions then we call that a theory. If new data contradicts the theory or hypothesis then we revise and try again.
Science is built upon repeatable experiments that can be used to test hypotheses. It is not built on axioms and logical extrapolation- those are used to form new hypotheses but they are insufficient by themselves. We don’t decide something exists, we hypothesize that it exists and make predictions based on that hypothesis. If experimental results line up with our predictions then we call that a theory. If new data contradicts the theory or hypothesis then we revise and try again.