I happily quote my textbook, "There is much that is unclear, much that is ill understood, and much that will, no doubt, soon prove to be mistaken. There are places where it is not yet clear what the right questions are, let alone the answers."
"Philosophy of cognitive science has something of the flavour of a random walk on a rubber landscape. No one knows quite where they are going, and every step anyone takes threatens to change the whole of the surrounding scenery."
~Andy Clark, Mindware.
How could I not be excited by a discipline with so much adventure? :D