1. The act of labeling something with a word, disguises a challengable inductive inference you are making. If the last 11 egg-shaped objects drawn have been blue, and the last 8 cubes drawn have been red, it is a matter of induction to say this rule will hold in the future. But if you call the blue eggs "bleggs" and the red cubes "rubes", you may reach into the barrel, feel an egg shape, and think "Oh, a blegg." (Words as Hidden Inferences.)

The alternative is worse. When I talk about a piano, I'm disguising the inference that an object with a certain outward appearance has a series of high tension cables running through it, each carefully set up with just the right tension so that the resonant frequency of each is 2^(1/12) times the last, with each positioned so that it can be struck with a hammer attached to each key, etc. But do you really expect me to say all that explicitly whenever I mention a piano?