• Natural law here means a hypothesis. A proven hypothesis means a theory.
  • Karl Popper tries to say that the best way to prove a hypothesis is to disprove other false hypotheses.
  • By disproving other hypotheses, we get closer each to time to know that the original hypothesis is more likely to be correct.
  • If we fail to refute the original hypothesis, we become more certain that it is likely to be a correct hypothesis.
  • However, some scientists would argue that the best way to know if a hypothesis is correct or not is to directly prove it by experiments.
  • By eliminating other hypotheses, we cannot be certain that the original hypothesis is actually correct or not.
  • Therefore, in order to know whether a hypothesis is correct or not, it is better to prove it using, lab testing, experiments and evidence.
  • For example, in the Meselson and Stahl experiment, results and evidence were obtained directly to prove the semi-conservative theory of replication.
  • It is important to know whether a hypothesis is testable or not. Elimination of other hypotheses alone is not sufficient to know whether a hypothesis is correct. It is essential to do experiments and give evidence for a hypothesis before we can make it a theory and then a law.