Volume 1 · The Machine Between the Ears · Essay 165

Index Mindset

There are two ways to walk through a library. One is to follow the map of subjects — logic and order. The other is to follow your nose — curiosity, whim, the strange title three shelves down. The index mindset is the first: knowledge pursued as a system of categories.

The system has real power. Categories compress the world; the index lets you find anything without reading everything. Schools, search engines, and sciences are built on it. Without categories, experience is a pile.

But the index has a shadow: it only finds what someone already filed. The question that has no category yet — the new thing, the unnamed problem — cannot be looked up. It must be wandered into. Every original thought began as a misfiled book.

So keep both passes through the library. Use the index to learn what is known; leave time to wander the shelves for what is not yet filed. The map shows you the territory everyone agrees on. The interesting territories are still off it.