Science deals with measurable occurrences in life whereas Philosophy deals with the meaning of life itself, which is immeasurable. The application of the rigor of the scientific method to philosophy is based on the assumption that simple, universal truths exist and that an arbiter exists, to tell us what is true and what is not, whether it be a god or the consensus of modern society. In truth, everybody sees the world a little differently, there are many, many things we pretend to know that we really have very little information about (scientific findings of today, for example, may be disproved years from now) and all you can do is to see the world with your own eyes, and not through the eyes of someone else. I'm not saying that you should ignore science, but that life is not as certain as we may let ourselves think.