知识锥

Countless geometric cones surge forth. In a dim brown, empty space, an elderly man sits anxiously on a bench. He seems to be waiting for someone, glancing at his watch from time to time; yet he also appears ready to leave at any moment, as if trying to escape what is about to unfold. Suddenly, from afar, geometric cones sweep past like a roaring army, snatching the old man's hat away.