Nobody would think that I had an education sometimes the way my verbal skills disintegrate into stuttered and garbled nonsense. People say something to me and I staple myself onto the conversation with my swiss-army-knife word: cool. It can be used for anything. But I sometimes hate myself when I hear myself using it. So why do I persist. Because, I suppose, it sounds better than some other words. Of a limited choice of words for signalling your affirmation I have plumped for this one. Cool.