Ambiguity is not something to be feared. Albeit a challenge to the symbol making animals we, as humans, are and our constant need to determine what something is, or isn't, it is by far our most difficult challenge (Burke, Definition of Man). This is no major issue to me, the ambiguity of words as possibly inaccurate signs of even more ambiguous ideas that are signs of world phenomena. I personally take this, and I believe Locke did as well, as a great challenge that we as humans should take on together. It is by our debate, discourse, agreement, dispute, and refutation that our words have meaning at all. Perhaps they are at times ambiguous, and at other times inaccurate, but they are most vital asset in making sense of our world and all its common, or not so common, occurrences.
I strongly believe in the idea that one of our most respected professors believes in: that nothing exists until it is spoken into existence. Without the discovery of something, the actual acknowledgment of it, and human interaction and ultimate assertion and categorizing of the phenomena, that phenomena has no meaning, at least in the human world. Locke argues that our words are just signs of ideas, both being abstract and ambiguous, and it would very difficult to challenge that assertion, but I believe that what is so great about the ambiguity of words is that can constantly be asserted, challenges, revised, and refuted. Concrete knowledge is only made "concrete" when that knowledge is experienced by enough people to make the knowledge valid. The same must happen for words. A word will only be valid as long as their is a consensus that it is an accurate signifier of what it is attempting to represent. Right now a cat is called a cat because the word cat has been consistently associated to the animal for centuries. Whether or not the word chosen to signify that animal is 100% accurate makes little difference because it is correct to overwhelming majority of people. I believe this idea of signification is fascinating and the connection we may soon draw between it and agent/cy will bring questions, and sometimes answers, that will be even more fascinating.