MENTAL MODEL · M4419

Mary's Room

TechnicalHigh supportNeuroscience

Included

Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Mary has lived her entire life in a black-and-white room, learning all the physical facts about color from books, but she has never actually seen color. When she first steps out of the room and sees red, does she learn something new?

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

It demonstrates the incompleteness of physical knowledge. It suggests that even if we possess all objective physical information (such as brain neural activity), we may still miss subjective experience (qualia). This provides philosophical support for the "hard problem of consciousness."

anchor

Anchor fast decisions

Knowledge argument: Mary, who knows all the physical facts about color, still "learns something new" when she first leaves her black-and-white room and sees red, challenging physicalism. The mechanism is "qualia."

MINIMUM ACTION

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Practice this model in one real situation:

Imagine an omniscient physicist Mary
let her experience red for the first time
raise the question of whether she gains new knowledge.

Check to track your progress (stored locally)

Learning progress0%

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Source support: Explicit

link
en.wikipedia.orghttps://en.wikipedia.org/wiki/Knowledge_argumentZH · Explicit
verified

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