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TRIZ: A Very Contradictory Problem-Solving Method

A Introduction and Workflow for Students


by Arvind Venkatadri

Written: May 04 2020

Updated: April 07 2024

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What's Your Problem?

  • Whatever can be wrong with a pizza box!!

  • Lids get soggy with steam, and may touch the toppings!

  • Steam naturally happens because pizza is hot !!

So?

CONTRADICTION: Ever tried to scrape cheese off the inside of a pizza box lid?

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What's Your Problem?

  • Chains need to be flexible so that can wrap around sprockets
  • Chains need to be hard so that they don't snap

So?

CONTRADICTION: Ever had greasy hands trying to re-align a slipped chain?

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A Good Contradiction is Half the Problem

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So what is TRIZ?

Genrikh Altshuller

  • All creative Patents solved..CONTRADICTIONS!
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What motivated TRIZ?

  • Altshuller data-mined 25K Patent Applications

  • Similar Contradictions were found across Domains

  • Similar Inventive Solutions were found across Domains

  • But...how does a Plumber talk with a Heart Surgeon?

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So, a Metaphoric Language

  • Big Idea : Generalized Problem: "Your Problem has been solved somewhere else", in a different DOMAIN in a different LANGUAGE

  • So can there be a "common" "crossover" language?

    • Altshuller invented one, with Metaphors
    • 48 TRIZ Metaphors for stating the Problem Contradiction
    • 40 TRIZ Metaphors for Inventive Principles

Why is a Raven like a Writing Desk?

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A TRIZ Worldview: Resources

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A TRIZ Worldview: IFR

  • The Ideal Final Result

    • A "Want my Cake and Have it Too" outlook
    • A uniquely TRIZ no-compromise formulation
    • A solution before the Solution
    • Focusses the Attention to specific regions of the Solution Space ( as we will see)
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TRIZ Worldview: Specify the Ideal Final Result (IFR)

  • State an Ideal Final Result
  • A basic principle of TRIZ is that systems evolve towards increased ideality, where ideality is defined as

Ideality=Benefits/(Harm+Costs)

  • Evolution is in the direction of
    • ⬆ Increasing benefits
    • ⬇ Decreasing costs
    • ⬇ Decreasing harm
  • IFR allows us to invert the direction of the problem: to come backwards from Solution towards the Situation

The extreme result of this evolution is the Ideal Final Result:

  • It has all the benefits,
  • none of the harm, and
  • none of the costs of the original problem.
  • The Ideal Final Result describes the solution to a technical problem, independent of the mechanism or constraints of the original problem.
  • It occupies no space, has no weight, requires no labour, requires no maintenance.
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A TRIZ Worldview: Contradictions

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So How Do Metaphors Work in Classical TRIZ?

  • State your Problem in "plain English"
  • "Metaphorize" your Problem using 48 TRIZ Parameters
    • You now have a TRIZ Contradiction
    • Maybe more than one way!!
  • Look up TRIZ Generalized Solutions for your Contradiction
    • You have say 4 TRIZ Inventive Principles
    • These are also metaphors!
  • "Un-metaphorize" them back into your problem

  • Ever used log tables? Addition is a "metaphor" for multiplication...no?
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TRIZ Workflow: Story #1: Meat Transportation

  • A meat plant owner in South America flies product to the United States.
  • Refrigeration is required during flight to keep the meat frozen.
  • Competition increased, Need to reduce delivery cost.
  • It became obvious that he must increase the amount of product per air shipment.
  • Refrigeration system...
  • CONTRADICTION: How to increase shipment AND keep it frozen?

He did exactly that.

  • Utilization of existing resources Flying at an altitude of 15,000–25,000 feet the air temperature is below 32 deg. F, so no refrigeration system was actually needed.

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TRIZ Workflow: Story #2: Red Adair and Oil Well Fires

  • An oil well in Saudi Arabia exploded and caught fire.
  • Initial efforts to extinguish it failed,
  • Famed firefighter Red Adair was called in.
  • There was enough foam available at the site to do the job.
  • The small hoses that were available could not shoot the foam quickly enough to do any good.
  • CONTRADICTION: How to use a Small Hose to spray Big Foam?
  • Red Adair stationed men in a circle all around the fire, with all of the available small hoses.
  • When everyone was ready all of the hoses were opened up and foam was directed at the fire from all directions. In this way a huge amount of foam quickly struck the source of the fire. The blaze was extinguished,
  • The Saudis were satisfied that Red had earned his three million dollar fee.
  • INVENTIVE PRINCIPLES: Segmentation
    Excessive Action
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TRIZ Workflow: Formulate a Problem Description

  • Use your CULTURAL CAPITAL and your DOMAINs to write a PROBLEM in simple English
  • Ask: 5W+H
    • What does the problem seem to be?
    • Who has the problem?
    • When does the problem occur? All the time? Under certain circumstances?
    • Where does the problem occur?
    • Why does the problem occur?("Ask why 5 times" -- W. Edwards Deming)
      • How does the problem occur?
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TRIZ Workflow: Look the "Resources" and Causes

To refine our Problem, what Resources do we have?

  • One Good way to do this is using the Ishikawa Diagram
  • Man, Material, Method, Management, Machinery (Ishikawa)
    • This diagram is used primarily to assign CAUSES
    • But it conveniently lists all the Resources.
    • What things create the compromise/tradeoff?
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TRIZ Workflow: Inspect the Ishikawa Diagram

  • From the Ishikawa Diagram
    • What is One Parameter or Knob for each of the Causes that you have listed therein?
  • Let us make a list for each Knob/Object:
    • What is the Knob meant to do? What is its main Purpose?
    • What are the other Accompanying Objects that it works with?
  • What are the current Settings for each Knob?
  • Change the Setting of Each Knob to its natural opposite extreme. What Happens?
    • You will see that in many cases, each Knob creates a Certain Outcome at one Setting and another Outcome at the Opposite Setting.
  • This is the Source of your Administrative Contradiction !!

What sort of Contradictions do we see in familiar objects today? What is good and what is not so good? Could that be the source of a problem to solve?
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TRIZ Workflow: Case Study #3

Wildlife Crossings Key to Highway Safety in Banff

Why did the bear cross the Trans-Canada Highway?

We may never know, but thanks to the Banff Wildlife Crossings Project, there’s a good chance it made it to the other side.

When the 82-kilometre section of the Trans-Canada Highway that runs through the Rocky Mountains in Banff National Park was built in the early 1950s, it wasn’t expected to be the major artery it is today. But as park visitation increased, traffic volume surged—and so did highway-related wildlife mortality.

https://discoverapega.ca/stories/wildlife-crossings-key-to-highway-safety-in-banff/

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TRIZ Workflow: Case Study #2: Wildlife Crossings in Banff

  • Knobs from the Ishikawa Diagram (short list):

    • Speed(L/S); Size of Animal(L/S); Number of Animals(L/S); Time of Migration(D/N);
  • Output: Road Kill / Affects Animal Migration / Human Costs / Fast Journeys

  • AC: We want to drive at high speed, but not kill migrating wild animals (or endanger our vehicles).

  • IFR: "The Animals and Humans should use the Road at the Same Time"
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TRIZ Workflow: Case Study #2: Wildlife Crossings in Banff

  • Technical Contradictions: From the 49 TRIZ parameters:
    • TC1: Increase Speed(9) and not worsen Duration of Action by Moving Object(15)
    • TC2: Improve Volume of Moving Object(7) and not worsen Loss of Time(25)
    • TC3: Improve Object affected by external harmful factors(30) and not worsen Duration of Action by Stationary Object(16)[see footnote] Animals are stationary compared to the cars!!
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TRIZ Workflow: Case Study #2: Wildlife Crossings in Banff

Inventive Principles:

  • TC1: 3(Local Quality), 19(Periodic Action), 35(Parameter Change), 5(Merging).....Local Quality? Parameter Change? Ok, change the road in some way...can't change all cars and definitely can't "change" animals!!

  • TC2: 35(Parameter Change), 18(Mechanical Vibration), 34(Rejecting and Regenerating Parts).

  • TC3: 17(Another Dimension)!!!, 1(Segmentation), 40(Composite Materials), 33(Homogeneity)

Solution:

  • (17)Another Dimension + (35)Parameter Change + 3(Local Quality) = Animal Bridge!!!
  • Also 33(Homogeneity) = Equal Opportunity for Animals and Vehicles ]
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TRIZ Workflow: Case Study #2: Wildlife Crossings in Banff

NOTE: The IFR embodies a PC !! So TRIZ Separation Principles suggest "separation in Space and there you are: you have a bridge!!

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TRIZ Workflow: Case Study: Spotify Ad

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TRIZ Workflow: Case Study: Spotify Ad

  • Knobs (short list):
    • Travel Time(L/S); Purchase Time(L/S); Noise(Loud/Soft); Bargaining Talk(Long/Short)
  • Output: Stress / Boredom / Waste of Time / Mom is Happy / Veggies
  • AC: I want to chill, but Mom wants me to take her veggie shopping. I have to put up with waste of time and possibly boredom.
  • IFR: "I should go AND not go to the market at the same time"
  • TC: From the 48 TRIZ parameters:

    • TC1: Increase Productivity(39) and not worsen Stress(11)

    • TC2: Improve Loss of Time(25) and not worsen Effect of External Harmful Factors(30)

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TRIZ Workflow: Case Study: Spotify Ad

Inventive Principles:

  • TC1: 10(Prior Action), 37(Thermal Expansion), 14(Spheroidality).....hmm, not very inspiring, unless 37 means get angry with Mom !! Never!!
  • TC2: 35(Parameter Change), 18(Mechanical Vibration)!!, 34(Rejecting and Regenerating Parts).

Solution:

  • 18(Mechanical Vibration) : Make noise of your own? 🔉 NA
  • 35(Parameter Change): Change Bargaining Talk to Sweet Sound: Play music!!🎵
  • Also 14(Spheroidality): Wear "spherical" headphones!!🎧! Create a "sound sphere"! Long shot!!
  • SO: with Spotify on, I was in the market, and not in the market !! IFR achieved !! Ta Da !!
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TRIZ Workflow: Case Study : Arc of the Diver

  • AC: When diving, the water may hurt the diver if they do not land properly.
  • Knobs: Water(Deep/Shallow); Dive(High/Low); Weight of Diver(H/L); Posture?
  • IFR: For high water diving, water must be “hard” to support the diver and “soft” so as not to injure the diver.
  • TC: Try!!
  • PC: The physical contradiction: The water must be hard and soft at the same time.
  • Solution: This contradiction is resolved by Separating the requirements in space: Saturate the water with air bubbles — the pool contains both air and water.

via GIPHY

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TRIZ Workflow: Case Study: Plastics in the Water

  • AC:
    • Plastics are polluting the oceans
    • They are impossible to retrieve from there;
    • 80% of all ocean plastics come from ~1600 rivers!

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TRIZ Workflow: Case Study: Plastics in the Water

  • Knobs: Rivers? Water? Flow? Humans? Plastic waste itself? Water craft(boats/ships..)

  • AC: Plastics are polluting the oceans, they are impossible to retrieve from there; 80% of all ocean plastics come from ~1600 rivers!

  • IFR: Rivers must flow, but plastic must not.

  • PC: The Plastics must be in the water AND not in the water at the same time.

  • ( Do we need "two kinds of water", then???)

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TRIZ Workflow: Case Study: Plastics in the Water

  • TC:
    • TC1: Increase Volume of Stationary Object(8) and not worsen Object affected by external harmful factors(30)
    • TC2: ??
  • Inventive Principles:

    • IP34: Discarding and Recovering? What can we discard in the water? Would we want to? Not sure...

    • IP39: Inert Atmosphere? In water? Ok..water must not flow in some places and be "inert" elsewhere. But how? Some blockage?

    • IP19: Periodic Action? Doing something again and again? What? Agitate the water? How?

    • IP27: Cheap Short Living Objects? In the water? What...

    Wait....BUBBLES !!!!

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TRIZ Workflow: Case Study: The Great Bubble Barrier

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TRIZ Workflow: Case Study: Bus Strikes in Japan

  • Drivers "need" to protest against their Employers

  • Strikes hurt commuters, who are forced to empathize (Bah! Design Thinking!!)

  • Strikes do not directly "hurt the management"..which is the intent!

  • When drivers return, they are apologetic...maybe.

http://www.darrellmann.com/mini-case-study-strike/

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TRIZ Workflow: Case Study: Bus Strikes in Japan

TC: Improve Force(10) ( i.e.of the Strike) and not worsen Object generated Harmful Effects(31) ( i.e. on themselves nor on commuters) IFR: Drivers must convey their anger only to employers who are far away.

  • Knobs:
    • Drivers(Y/N); Commuters(Y/N);
    • Schedules; Timings(OK/NOK); Time of Day
    • Fares; Routes; Tickets; Money; Change;
    • Types of Buses; Seats...
  • AC: We want to strike against our employers, but they are not riding on the buses we drive !! Commuters are!!
  • PC: Drivers must strike AND not strike at the same time! ( From whose point of view !! )
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TRIZ Workflow: Case Study: Bus Strikes in Japan

TC: Improve Force(10) ( i.e.of the Strike) and not worsen Object generated Harmful Effects(31) ( i.e. on themselves nor on commuters)

  • IP13(The Other Way Around!!): What points one way and can be turned around? Bus Routes? Ticket Transactions?

  • 3(Local Quality): Something should be different inside the bus!!

  • 36(Phase Transition): Hmm..everybody involved must "change dramatically"...who? Commuters? Drivers ?

  • 24(Intermediary): Fuel Cost and Loss of Revenue as intermediary between striking staff and the company!

How can we use these...

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TRIZ Workflow: Case Study: Bus Strikes in Japan

Solution:

  • Run buses properly on time! Use Fuel and Time!

  • But FREE !! The Bus Ticket Transaction is the other way around! So Conductors pay commuters..by not charging!! Stop ISSUING TICKETS !!

  • Local Quality, Phase Change, The Other Way Around, and Interediary...all in one

http://www.darrellmann.com/mini-case-study-strike/

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TRIZ: Workflow Summary

  • Find a PROBLEM
  • Look at RESOURCES (knobs) within the Problem and how they affect the situation

  • Turn the knobs to formulate a ADMINISTRATIVE CONTRADICTION (a trade-off or a compromise in plain English)

  • Specify an IDEAL FINAL RESULT

  • Convert/metaphorize the CONTRADICTION into TRIZ PARAMETERs

  • Look up the TRIZ CONTRADICTION MATRIX. Discover the INVENTIVE PRINCIPLES you might apply

  • Un-metaphorize the INVENTIVE PRINCIPLES to apply them in a specific way in your problem and solve it!

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Maurice Leloir (1851-1940)

Thanks!

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What's Your Problem?

  • Whatever can be wrong with a pizza box!!

  • Lids get soggy with steam, and may touch the toppings!

  • Steam naturally happens because pizza is hot !!

So?

CONTRADICTION: Ever tried to scrape cheese off the inside of a pizza box lid?

2 / 37
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