Selection Logic
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Selection Logic

A theoretical framework to help consumers make more rational choices

Practice Wiki FAQ Blog

Axiom System

  • A1 Finitude
  • A2 Conditional Subjectivity
  • A3 Improvability

Theorem System

T1
Matching Theorem (A1 + A2)
  • T1.1 No Universal Best Product
  • T1.2 Reviews Contain Value Assumptions
T2
Cognitive Budget Theorem (A1 + A3)
  • T2.1 High-Value Decisions Merit More Effort
  • T2.2 Low-Reversibility Decisions Merit More Effort
  • T2.3 Use Heuristics for Low-Value, Reversible Decisions
T3
Consistency Improvement Theorem (A2 + A3)
  • T3.1 Better Selection Shows as Better Fit
  • T3.2 Better Selection Shows as Lower Regret
T4
Selection Efficacy Theorem (A1 + A2 + A3)
  • T4.1 Perfectionism Can Reduce Efficacy
  • T4.2 Good-Enough Can Beat Best
T5
Immunity Value Theorem (A2 + env)
  • T5.1 Manipulated Decisions Reduce Consistency

Core Concepts

  • Selection Efficacy
  • Cognitive Budget
  • Fit Score
  • Need Consistency
  • Selection Immunity
  • Decision Reversibility

Methodology

  • M1 Need Clarification Method
  • M2 Multi-Dimensional Evaluation
  • M3 Systematic Evaluation Method
  • M4 Comparative Analysis Method
  • M5 Decision Validation Method

Decision Models

  • D1 Decision Flow Model
  • D2 The 7-Step Rational Buying Process
  • D3 Scenario-Based Decision Model

Further Reading

  • Introduction to Selection Logic
  • Theoretical Origins
  • Theory Validation Process
  • What are the five theorems?
  • The Psychology of Sales: Decision Traps Behind Promotions
  • A Systematic Framework for Smart Home Purchases
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Rational Choice, Scientific Decision