In college, I asked a professor if there was any way to improve the scientific method. She laughed and told me of course not.
Perhaps we should recognize that there are limits on this method, and that is this – you can only “know” things which you can observe. By nature, this leaves out a huge portion of reality.
By operating solely by this concept, we can realize that there is a huge portion of knowledge that cannot be attained, simply because we cannot observe it.
There are limits on the scientific method, by the very essence of it being a method. If it is all inclusive, there is no way to accurately evaluate knowledge or information. By placing a filter on it, we are able to accurately sift through a small portion of nature (like physics, mathematics, chemistry).
But, we cannot even begin to figure out extremely complicated systems, like psychology, philosophy or spiritual questions.