I think I mostly agree with Promit. When "regular" people attempt to take a stab at "philosophy", the whole thing looks a bit like the usual...profound statements made during stoning sessions: "Whoa, dude, what if we're all already dead and we don't know it'.
Not that I don't do it though. One thing that I ponder about sometimes with my...untrained mind is the whole "free will" issue. I don't really like thinking that our brains our merely "blind" chemical machines, and that our every action is pre-determined according to nature's laws, although this might be the case(note that most scientists believe the brain functions based on classical laws, and that QM doesn't really play a role. Penrose disagrees, but he's a minority). On the other hand, I can't even find a definition of "free will" that satisfies me. Free from what? Obviously it will have a degree of freedom from physical,mathematical laws. But other than that? Randomness isn't "free will". Is it a magical "core", the "soul", that we can know nothing about? Unsatisfactory answer. So yeah, I'm left kind of believing that humans have free will, but not really being able to define the exact meaning of those words.
Also, dudes, whoa, what if we're in the Matrix lol?!!!!!??
I used to think that the universe behaved deterministically and I had a debate about it with my professor in philosophy of science. I claimed that the universe behaves deterministically. My professor said that Quantum Mechanics invalidates determinism. I said that QM is deterministic but we just don't have a working model which explains it accurately (appeal to ignorance fallacy). I now believe that my reasoning may be wrong, but it's nearly impossible to test whether the universe is deterministic or not. I suppose if you could recreate the big bang with the exact same state as it was in the origin of our universe and result in a few armchair philosophers debating determinism in this forum 14 billion years later, then determinism is true. But damn, considering the chaos and complexity of every atom and wave of electromagnetic energy conjoined with Heisenbergs uncertainty principle, it seems impossible to claim determinism is true. I can't explain a consistently true model to accurately predict which particle will become a radioactive decay particle... So, if at least the quantum world is non-deterministic, then we can say that a part of the universe is non-deterministic. Does the non-determinism of the quantum world feed upwards into the larger scales of the universe?
I believe we all have free will. Without free will, we couldn't truly be held accountable for our actions because they'd already be pre-determined, which would then suggest determinism is true. Every itch and every scratch would be pre-ordained from the beginning of time. The existence of free will depends on determinism being false (philosophically debatable).
I'm in agreement with Swiftcoder: Philosophy is an excellent complement to a technical degree. The foundations of mathematics and computer science come from logic (see:
Mathematical Logic). I chose to minor in philosophy because I thought it would be a good counter-weight to the computer science degree I was pursuing. It's important to know the "how" and also the "why" behind what we're doing... otherwise, we run the danger of becoming mad scientists. Though, getting a 4 year degree exclusively in philosophy is probably not very prudent from an employability standpoint.