The Beetle in the Box

Suppose everyone had a box with something in it: we call it a "beetle." No one can look into anyone else's box, and everyone says he knows what a beetle is only by looking at his beetle. This is §293 of the Philosophical Investigations. Wittgenstein then draws the consequence that demolishes the picture behind most debates about inner experience: whatever is in the box drops out of consideration as irrelevant. The word beetle gets its meaning from its use in the public language game, not from the private object it supposedly names. The thing in the box — a beetle, a stone, nothing at all — makes no difference to how the word functions.