Alan Greenspan passed away. Whatever you think of his policies, he shaped how we talk about markets for decades. His genius was saying everything while revealing nothing—an art form that's mostly lost now.

Markets loved the ambiguity. They could project whatever they wanted onto his words. "Irrational exuberance" entered the lexicon. So did "Greenspan put."

He was from a different era—when central bankers were oracles, not Twitter accounts. When uncertainty was a feature, not a bug. When markets had to think harder about what might happen next.

The cartoon that captured him best: someone asking "What did he just say?" and another replying "I have no idea, but the market's up 2%."

That was the whole game.