How do you know for certain that the scientific method works? You only know it via anecdotal evidence, because you can't use the method to test itself, since th

How do you know for certain that the scientific method works? You only know it via anecdotal evidence, because you can't use the method to test itself, since that assumes a priori that it works. So science cannot be used to investigate certain questions about itself. Instead they fall into the topic of philosophy of science, and have no definite answers.