T-01–T-05Systematic Inventive Thinking

5 Tools for Systematically Innovative Thinking

Innovation isn't a lucky break. These five thinking operations break an existing product down into its components and apply one fixed rule — subtract, split, multiply, merge, link. Enter your product once, generate all 5 tools.

Based on the Systematic Inventive Thinking method from "Inside the Box" by Drew Boyd and Jacob Goldenberg.

Proven against real innovation cases

Sony Walkman9/10
Subtraction · T-01

Found both core elements of the real solution: drop the recording function, replace the speaker with headphones.

Apple App Store10/10
Task Unification · T-04

"Independent developers build apps for the official App Store" — nearly word-for-word Apple's real strategy.

Gillette TRAC II9/10
Multiplication · T-03

Independently described how the trailing blade catches hair positioned by the leading blade — the patent's actual mechanism.

Your Case

T-01

Subtraction

You remove a core component of a product or service — something that previously seemed essential.

ExampleSelf-service gas station without a cashierRemovedThe cashier — considered essential to making a sale
T-02

Division

You take a component and split it along a physical or functional line. Then you reorganize it back into the product.

ExampleElectric toothbrush with a replaceable headSplitBrush → handle + headReorganizedOnly the head is replaceable
T-03

Multiplication

Many innovative products take a component, copy it, and change the copy in an unexpected way.

ExampleMulti-blade razorMultipliedOne blade → several slightly offset bladesVariationDifferent angles
T-04

Task Unification

A component is assigned an additional job it wasn't originally meant to do.

ExampleSmartphone as a flashlightExtra jobCamera LED takes over the lighting function
T-05

Attribute Dependency

A product shows a correlation between two product attributes, or between a product attribute and its environment. As one thing changes, another changes with it.

ExampleWindshield wipers adjust their speed to the rainDependencyRainfall ↔ wiper speed

Your Innovation Sketch

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