Cognitive Scaffold

Preparing your thinking workspace

arrow_back_ios_new
MENTAL MODEL · M11405

Descartes' Four Rules

Descartes' Four Rules
SystemsHigh supportSystems Theory
Included
account_tree

Updated 2026-08-13

Loading revision record…

INTRODUCTION

English translation pending.

CORE DEFINITION

In the Discourse on Method, Descartes proposes four rules of thinking: doubt, accept nothing as true that has not been verified; divide, break each problem into as many small parts as possible; order, begin with the simplest and advance step by step to the complex; and exhaust, ensure that nothing is omitted. The core claim is that systematic doubt followed by analysis, ordering, and completeness constitutes a general method for reaching reliable conclusions. The key condition is that the rules be followed in sequence, since doubting a premise after dividing it arrives too late. It is the founding paradigm of analysis, reduction, and stepwise verification.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Premise doubt: verify each assumption before doing any real work on it. - Part division: split the problem into the smallest pieces that can be handled. - Ordered advance: solve from the simplest piece to the most complex, in sequence.

anchor

Anchor fast decisions

An unverified premise contaminates every conclusion drawn from it, so doubt must come first or the later work simply inherits the error. Division reduces a problem to pieces small enough that each can be verified individually, and ordering starts at the piece where certainty is highest, so each later step rests on a confirmed base. Exhaustiveness closes the method, since a solution that omits a case is not a solution for that case, which is what makes the method transferable rather than lucky.

MINIMUM ACTION

In progress 0/1

Practice this model in one real situation:

Check to track your progress (stored locally)
Learning progress0%
account_treeGenealogyexpand_more
menu_bookReferencesexpand_more

Source support: Explicit

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

RELATED MODELS

Related model

Wirth's Law

Wirth's law is an adage on computer performance which states that software is getting slower more rapidly than hardware is becoming faster.

arrow_forwardRelated model

Hyrum's Law

An application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. A documen

arrow_forwardRelated model

Coriolis Force

The Coriolis force is an inertial-force term needed to describe motion in a rotating reference frame, involving the cross product of frame angular velocity and relative object velocity.

arrow_forward