It from Bit
When you take a thing apart all the way, what is waiting at the bottom — matter, or information? Wheeler bet on information.
Take anything apart all the way down — a table, a star, a passing thought — and what's waiting at the bottom? The usual answer is particles. The physicist John Wheeler made a bolder bet: "It from Bit." Maybe what's at the bottom isn't matter but <em>information</em>, and matter is the thing that gets derived — built up out of yes/no answers, rather than the other way around.
Level 2 The explanation▾
Wheeler coined the phrase for exactly that idea: that every item in the physical world traces back, at bottom, to something "non-material" — answers to yes/no questions, acts of measurement. It's a serious proposal from a first-rate physicist. It's also a founding idea, not a confirmed result, and the difference matters.
A critical precision. Wheeler was talking about yes/no questions and the role of measurement — not about a "consciousness field." If you're going to lean on him, lean carefully: he inspired the thought that "reality arises from information," and he claimed nothing more than that.
Level 3 Deeper▾
Speculation The jump from "It from Bit" to "the universe is consciousness," or to "everything is information in the sense of meaning," is not Wheeler's, and it doesn't follow from the physics. It's a metaphysical extension, and its place is here, framed as one.
If you take the world apart all the way and what's left at the bottom is a list of numbers, the honest question presses in: have we found what the world is made of, or only the most precise language we've yet got for talking about it? The site keeps that distinction open.
Framing
"It from Bit" is Wheeler's founding idea on the role of information/measurement at the base of physics.
What is open
Whether information truly precedes matter — there is no experimental verdict.
Off limits
That Wheeler claimed a "consciousness field," or that physics proved the universe is made of consciousness.
Level 4 Sources▾
- Wheeler, J. (1990). Information, Physics, Quantum: The Search for Links — statement of "It from Bit."
- The debate on measurement and the observer in quantum theory (does not require "consciousness").
- The extension to "universe as consciousness/information-as-meaning" — marked speculation.