Save to My Latticework unsave

Fishbone / Ishikawa Diagram
Fishbone / Ishikawa Diagram
Fishbone / Ishikawa Diagram
save0 saved view13.3K views
Share this with your network
Share this with your network
Overview

Track the reasons behind challenges and problems in any domain using this hierarchy based tool — bonus, it looks like a fish, what’s no ...

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Illud mihi a te nimium festinanter dictum videtur, sapientis omnis esse semper beatos; Qui autem diffidet perpetuitati bonorum suorum, timeat necesse est, ne aliquando amissis illis sit miser. Et quidem iure fortasse, sed tamen non gravissimum est testimonium multitudinis. Sed quod proximum fuit non vidit. At quanta conantur! Mundum hunc omnem oppidum esse nostrum! Incendi igitur eos, qui audiunt, vides. Innumerabilia dici possunt in hanc sententiam, sed non necesse est. Iubet igitur nos Pythius Apollo noscere nosmet ipsos. An hoc usque quaque, aliter in vita?

Duo Reges: constructio interrete. Velut ego nunc moveor. Qua tu etiam inprudens utebare non numquam. Satis est tibi in te, satis in legibus, satis in mediocribus amicitiis praesidii. Quia voluptatem hanc esse sentiunt omnes, quam sensus accipiens movetur et iucunditate quadam perfunditur. Quacumque enim ingredimur, in aliqua historia vestigium ponimus. Dulce amarum, leve asperum, prope longe, stare movere, quadratum rotundum. Praetereo multos, in bis doctum hominem et suavem, Hieronymum, quem iam cur Peripateticum appellem nescio. Ut alios omittam, hunc appello, quem ille unum secutus est. Aperiendum est igitur, quid sit voluptas; Equidem e Cn. An est aliquid per se ipsum flagitiosum, etiamsi nulla comitetur infamia?

Quod autem ratione actum est, id officium appellamus. Tum mihi Piso: Quid ergo? Commoda autem et incommoda in eo genere sunt, quae praeposita et reiecta diximus; Et harum quidem rerum facilis est et expedita distinctio. Scientiam pollicentur, quam non erat mirum sapientiae cupido patria esse cariorem. Atque hoc loco similitudines eas, quibus illi uti solent, dissimillimas proferebas.

Share this model with your network to be smarter, faster, together!
Actionable Takeaways
  • Identify the problem, or effect. 

Define the problem or end effect that is being investigated and w ...

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Facit enim ille duo seiuncta ultima bonorum, quae ut essent vera, coniungi debuerunt; Haec bene dicuntur, nec ego repugno, sed inter sese ipsa pugnant. Bonum negas esse divitias, praeposìtum esse dicis? Eorum enim omnium multa praetermittentium, dum eligant aliquid, quod sequantur, quasi curta sententia; Duo Reges: constructio interrete. Aut unde est hoc contritum vetustate proverbium: quicum in tenebris? Occultum facinus esse potuerit, gaudebit; Quae contraria sunt his, malane? Bork

Quid enim me prohiberet Epicureum esse, si probarem, quae ille diceret? Praeteritis, inquit, gaudeo. Restincta enim sitis stabilitatem voluptatis habet, inquit, illa autem voluptas ipsius restinctionis in motu est. Haec para/doca illi, nos admirabilia dicamus. Quem Tiberina descensio festo illo die tanto gaudio affecit, quanto L. Quid enim possumus hoc agere divinius? Dic in quovis conventu te omnia facere, ne doleas. Itaque hic ipse iam pridem est reiectus;

Etsi ea quidem, quae adhuc dixisti, quamvis ad aetatem recte isto modo dicerentur. Primum divisit ineleganter;

Explore More
Fishbone / Ishikawa Diagram is featured in these playbooks:
Limitations

The main issues with the diagram are the differentiation between causes and sub causes. For example, some causes might be complex, with many elements below them, becoming impractical to capture in the diagram. By breaking it up into separate categories, the diagram also does not lend itself to a more connected view of challenges. 

Finally, there is no clear prioritisation within the diagram — all causes seem equal, when in reality a sub cause, which is visually small, might be the key issue. Other causes and sub causes therefore might become a distraction.

In Practice

Internal damages at IKEA.

This paper from Ikea in Portugal describes a process improvement process to address the level of internal damages in Ikea stores. The diagram below was part of a broader analysis process.

Build your latticework
This model will help you to:

The fishbone or Ishikawa diagram, also known as the cause-and-effect diagram, is a core tool within quality management and is commonly used for improvements in products, manufacturing and other fields. 

Use the following examples of connected and complementary models to weave the fishbone diagram into your broader latticework of mental models. Alternatively, discover your own connections by exploring the category list above. 

Connected models: 

  • 5 Whys: in digging to root cause, use this as part of the fishbone process. 
  • Second order thinking: to go beyond the initial cause to sub causes. 
  • 4Ps of marketing: as possible categories. 

Complementary models: 

  • Risk matrix: to consider potential issues with consequences versus likelihood. 
  • Chain reaction/ domino effect: to consider the flow on effects of potential issues. 
  • First principle thinking: to identify and go below assumptions. 
  • Occam’s razor: to cut to the core of the issue. 
  • Divide and conquer: separating out and addressing potential causes.
Origins & Resources

The Fishbone Diagram was created by quality management pioneer Professor Kaoru Ishikawa in 1968. Ishikawa, an engineer, was a leader of quality management at Kawasaki at the time. In his 1986 book, Guide to Quality Control, Ishikawa argued that there were six other key quality tools in addition to what he called the ‘cause-and-effect diagram’, which were: control chart, histogram, flow chart, run chart, scatter diagram and Pareto chart. 

My Notes

    Nothing here yet. Join ModelThinkers and login to be the first to comment.
Already a ModelThinkers member? Please log in here.

Oops, That’s Members’ Only!

Fortunately, it only costs US$5/month to Join ModelThinkers and access everything so that you can rapidly discover, learn, and apply the world’s most powerful ideas.

ModelThinkers membership at a glance:

Small mark
UNLOCK EVERYTHING
Access all mental models and premium content.
Small mark
BUILD YOUR LATTICEWORK
Save models to your personal list.
Small mark
QUICKLY MEMORISE MODELS
Use our Learn function to embed models to memory
Small mark
PERSONALISE MODELS
Add your own notes and reminders.
Small mark
BUILD YOUR ‘EXTERNAL BRAIN’
Discover a new idea? Capture it by adding a new model.
Small mark
JOIN THE MT COMMUNITY
Rate models, comment and access exclusive events.

“Yeah, we hate pop ups too. But we wanted to let you know that, with ModelThinkers, we’re making it easier for you to adapt, innovate and create value. We hope you’ll join us and the growing community of ModelThinkers today.”

Arun Pradhan & Shai Desai
CoFounders, ModelThinkers.

You Might Also Like:

- Actionable summaries of the world's most powerful ideas.