 Not to any living creature in the interior of the earth. Then... Look closer, my boy. The blade was never blunted like this with fair wear and tear. No. Observe now. It is thick with rust. And this rust is not merely a day old. Not a year old. Not even a century old. But, uncle... Listen, Miss Massey. We are now on the verge of a great discovery. This dagger. A wonderful and fortunate find, my boy.