
Originally Posted by
Il Dante
First, I think that whether or not philosophy is useless, it is certainly understandable. It is altogether understandable to wonder: who am I, where did I come from, is there a purpose, etc.
Also, when was the day that science liberated itself from philosophy? What we call natural science used to be called "natural philosophy." The old name was more appropriate, because science is nothing more than a subset of philosophy. It is the application of certain philosophies in an attempt to make sense of the world. It is not greater than philosophy; rather, it is subordinate to philosophy.
Every scientific endevour makes basic philosophical assumptions. For example, when trying to create a theory to explain gravity, Newton made the metaphysical assumption that the universe is rational and that the stars are not being shunted around by capricious demons.
Of course, almost none of us has any problem with that assumption. But still, you have to admit that his science was, as all science is, subordinate to philosophy and based upon philosophical postulates.
So everything, whether purely philosophical or scientifically philosophical, is based upon certain metaphysical assumptions that we make. These constitute the foundation of all our reasoning. Unfortunately for seekers of the truth, most of these basic assumptions cannot be proven. For example, you can assume that the material universe is all there is and create scientific theories based upon that assumption. But that assumption can never be rigorously proven. Whether you believe in a universe without spirits or a universe with spirits, you can always create theories based upon your assumption to fit the data. Such theory creation is possible because science is not a purely logical process, but also involves creativity on the part of the scientist. It is a creative process inspired by data and tempered by experiment.
So where have we gone? Strictly speaking, no where.
The moral of this story is that philosophy cannot lead to an absolute knowledge of truth. It can only lead to contingent truth, i.e. thus and such is true if we assume x, y, and z.
The best we can do is make educated guesses. You can try to make your guesses more and more educated, but until you are omniscient (i.e. never) you can never know WITH ABSOLUTE CERTAINTY anything more than logical tautologies.
This means that absolute skepticism of the "I think, therefore I am" variety does nothing for us. It doesn't get us anywhere.