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5whys is a very simple and easy to learn tool but it is very effective in root cause analysis. Each answer forms the basis of the next question. Some real-life 5 Whys examples. However, the credit of bringing the 5 Whys to mainstream implementation goes to Taiichi Ohno, pioneer of the Toyota Production System. . This example from The UK’s National Health Service Improvement Network is a good illustration of this technique in action: (there are further examples on the resource links at the bottom of this page). by repeating why five times, the nature of the problem as well as its solution becomes clear.”As any parent can attes… Why? 5 whys analysis is a great way to understand a customer problem and figure out which aspects your team can work on. about Is Human Error a Root Cause? These are the people who are working on the equipment, process or project that is facing the problem and have encountered the problem first hand. In cases lik… five times. Are you aware of these highly effective Analysis Techniques? The 3x 5 Why Analysis, also referred to as the 3-Legged 5-Whys method, is based on The Five Whys. . 5 Whys is a straightforward technique for root cause analysis that is elementary yet immensely effective. 5 Whys Example. The rationale behind gathering every relevant member is to get a different viewpoint of the problem at hand. See the comparison of Example 1 to a TapRooT® Root Cause Analysis here: https://www.taproot.com/comaping-5-whsy-with-taproot-root-cause-analysis/. Since 5 why technique depends upon the ‘cause-and-effect’ relationship, it’s imperative to ensure that response to every ‘Why’ is a logical answer that is backed by a proof. EDIT THIS EXAMPLE. That all sounds easy, and it is, but you need to be careful that you run the process effectively and there are a couple of side tracks that can lead you down the wrong path. While defining the problem you may want the individual members to define what they feel is the issue and make a list of their responses. An Example of the 5 Whys. There was an oil spill on the floor in the machining department. 5-Why is useful for straightforward problems with systemic causes like the case noted above, where poor preventive maintenance is the systemic cause for unplanned equipment downtime. Why was the motor overloaded? I think we all want to find the actual, deepest, final true root cause and fix it. Your opinions of the 5-Whys below will help everyone judge the effectiveness of 5-Whys. The following is an example of the basic 5 why process. I didn’t find any of these “good” at finding root causes – even the one by the expert – Taiichi Ohno. 5 why means 5 cycles, but you may not need 5 cycles. ), I’ve been asked by many … “What do you think of 5-Whys?”. Is “No one ever said they should have an induction process.” a root cause? It doesn’t prompt for further data gathering, investigation, or consideration of other & multiple factors/causes. Why isn't the alternator working? 1. We will demonstrate an example of 5 whys. 5-Whys Guide & Template i The 5-Whys is a simple brainstorming tool that can help teams identify the root cause(s) of a problem. The testing team performed only sanity testing and not complete... 3. Continuous implementation of practices like 5 Whys has made Toyota the world’s largest automaker. Your email address will not be published. However, there are three distinct sets of Five Why questions: specifics, detection and systemic. Why is there no database on the computer to search from? Not all problems have a single root cause. A 5 Whys Example in Lean Manufacturing The 5 Whys Example in Lean Manufacturing In fact, I rarely exceed 3 Why. How quickly could he solve the issue of chips/particles in the fluid? Whenever an issue or a problem occurs, just ask “Why the problem occurred?” (at least) 5 times to the people working on it. You obviously need to get the site back up and running as a priority. How long would that take and how much money would that cost? Cause and effect analysis is often conducted by drawing cause-and-effect diagrams (also known as Fishbone Diagram), which organize a large amount of information by showing links between events and their potential or actual causes and provide a means of generating ideas about why the problem is occurring and possible effects of that cause. When dissecting a problem, ask why the issue occurred. There are many creative ways to solve problems and one quality tool that is commonly used in problem-solving is called the 5 Whys. Agenda When to Use 5 Why 3 Legged 5 Why Analysis 5 Why Examples Resources and References 5 Why and Customer Problem Solving Formats Where to Find the Blank Forms ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 421e00-MmNhM However, further probing unearths the actuals issue with the project management and estimation skills of the team. Investigations by the doctor reveal that he has a stomach ache as well and further diagnosis confirms that Jack is ‘actually’ suffering from a stomach infection. Maybe my mind jumps over steps. This step calls on for you to ask your team members why the problem statement has occurred and note down their responses. Step #2: Know when to stop. At each step the answer should be noted down and should form the basis of the next ‘Why’. Not your knowledge but what you think you know. In cases when the root cause is not readily apparent, 5-Why by itself will not solve the problem. Objective: Start with the problem and analyze it from a prevention and detection perspective and continue to ask WHY to each previous answer until the root cause is obtained. The 5-Why is a useful exercise to track a single line of cause and effect but it seems to lead to a causal factor rather than a root cause. In the example we end up with “No filter”. Similarly, in the IT example above, the business analyst, the technical lead, the testing lead and the developers working on the fixes should be the relevant members. Because we … Five whys is an iterative interrogative technique used to explore the cause-and-effect relationships underlying a particular problem. The "five" in the name derives from an anecdotal observation on the number of iterations needed to resolve the problem. 2. But that is OK. Is “Because the monument’s illumination attracts more insects.” a root cause? Why did it happen? Why there was not enough time for thorough functional testing? “Ask ‘why’ five times about every matter.”. Problem statement: During the time of User Acceptance Testing (UAT) an issue is observed by the client, 1. If one wishes to uncover multip Why has the issue been encountered by the client? More complex problems might require further investigations. Here’s an example you can use as a template for when you’re solving real-world problems: Problem: Employers haven’t called me back for an interview for the past 3 months Question 1: Why is my resume not getting noticed by employers? Source. Consider applying the logic used in this example to problems at your business. for that answer reveals a single reason (Reason 1), which you can address with a counter-measure. Why? (PS: I’ve had several people e-mail me to ask how the examples above would compare to TapRooT® Root Cause Analysis. Is “Because the organization does not have an enterprise planning methodology that weighs the risks of current operational systems failing versus the criticality of these systems and the impact of such a failure.” a root cause? It is simple to follow but it will give you a good idea of how the process works. Example 2: Here’s another example of our Information Technology (IT) Industry. Immediately after the site is back up and running you might then find it useful to use the 5 Whys technique to ensure that all the causes of the problem are addressed so that it doesn’t happen again.Let’s take a look at what might have caused your website to go down. The success of this technique is dependent upon its participants i.e. Take again the example from above, “The car will not start,” where the first why could already be: “Why? Because they didn’t have enough time to perform a thorough functional testing of the complete application. Although there were specifications about the permitted load frequency every hour, there were no instructions about the maximum load weight. There is no root cause at the end of the 5th Why. A persistent inquiry is required to find the real cause (the root cause) behind the issue so that lasting solutions can be taken and the problem doesn’t resurface.”. It seems so perfect, but it’s an illusion. Why don’t we have new computers that can have databases installed? Why has the conveyor belt stopped? At least one is a joke. 6. When faced with a lingering or reoccurring problem what do you do? Would the new process/equipment/fixture/product design/etc that eliminates the DEEPEST, TRUE root cause actually 100% guarantee prevention of this problem? 5 Whys works on the premise that “Every problem has a cause behind it but a superficial analysis will only depict symptoms. if relevant people are not available, the remaining group may not be able to find the correct answer to the Why question. In some Toyota plants, if they have under 1000 andon pulls per shift, they’ll decrease WIP to force more failures so more problems come to the surface without inventory to hide the problems. Basic 5 Why Example. This article takes you through the history of 5 Whys, its basics and examples, the correct procedure to conduct 5 Whys analysis and some tips & best practices on 5 Whys. Example of 5 why analysis: Problem: Material was not reached at the site on time. Why is the main pulley not rotating? Let’s measure, PESTEL Analysis: Application, Examples and Best Practices, Most Asked Business Analyst Interview Questions, Root Cause Analysis: Steps, Tools, and Best Practices, Business Analyst Job Description – Most successful Analysts excel in these four verticals, Key Business Analyst Skills Every Analyst Should Have, Become an irreplaceable Business Analyst for every stakeholder, Inculcates the feelings of openness within the team as the outlook of each and every member is considered, Simple, easy to follow process without requiring any statistical analysis or additional tools, Aids in reaching amicable consensus on areas with issues rather than fault finding or blaming individuals, 5 Whys is a time-consuming technique and involves deep probing and thorough evaluation of all the facts, 5 Whys cannot be done in isolation and need the availability of the associated team members, Sometimes it’s not possible to isolate a single root cause through this technique, The facilitators should be experienced enough to be able to ask the ‘right’ Why question. In the above example, the analysis might result in new training and processes for customer service rather than just looking at the surface of the problem as a performance issue. Root Cause: So you see, we needed 6 Whys to finally decipher that the weight of the load on the motor was more than its capacity and now we either need to replace the motor with a more powerful one or restrict the maximum load weight permitted on the conveyor belt at a time. Remember – “People do not fail, processes do”, The conveyor belt on the main production line has stopped, During the time of User Acceptance Testing (UAT) an issue is observed by the client, Business Analysis Tools that give you an Edge, Why a Developer can be a Analyst – 15 Reasons. At least one of these examples is obviously bad (but the people who posted it thought it was good). There are 5-Why users who believe the fifth Why question provides the “root cause.” It does not. (Another lesson here – don’t try to be a doctor when you are not ). One of the main reason why 5 Whys is so popular as a root cause analysis technique is its simplicity. The essence of 5 Whys is quite simply to ask “why?” 5 times. Here’s a look at the 5 Whys the team conducted: And the … Because the build came only one day before the UAT timelines and thorough functional testing take at least 3 days. Me: What did you learn in those 5 minutes? If done with the right set of participants it will lead to the discovery of faulty process and procedures and will help tackle the actual causes rather than just symptoms. Because the activity took longer than estimated. When you are faced with a problem, the first logical step is to gather relevant team members. Asking the 5-Whys The method is known as 5 Why, and most examples show exactly 5 whys. 5 whys participants should pay attention to the logic of the cause-and-effect relationship. For example, in the IT example above, going only by the word of the Technical Lead it seemed as if the Testing team is at complete fault of not being able to find the bug. Example 1: Let’s take an example from manufacturing domain. Don’t stop at only 5 Whys and try to see if the problem can still be broken down. That’s it. Because it’s not getting enough power from the motor, 3. by Nelson Aguirre-Duarte 3/25/2018 5:47:36 PM Hi I am a high supporter of RCA in my organisation and I think the tool is aligned on how to use the 5 why(s). The windings of the motor had burned out, 5. According to the Technical Lead, the testing team has not reported... 2. Why the testing team was not able to catch the issue Problem: Website went down. Why testing team performed only sanity testing? The 5 Whys method also allows you to follow multiple lanes of inquiry. Your email address will not be published. In our example, asking "Why was the delivery late?" Because we completed the activity late. Required fields are marked *. Great points. or "What caused this problem?" If you think one 5 Why is going to get you to root cause, you have a lot of learning to do! Problem statement: The conveyor belt on the main production line has stopped, 1. Why did we complete the activity late? There are 2 solutions – Just try to resolve the problem and move on Or investigate and analyze to see what is the real source of the problem so that it does not resurface. It may be used several times in the MEASURE phase or in LEAN Manufacturing projects.. It stopped because it didn't have any oil. For each reason given, ask why that reason happen. Why have the windings burned out? Create 5 Whys examples like this template called 5 Whys - Worksheet that you can easily edit and customize in minutes. Why was the build give only a day before the UAT? Second root cause: There is an issue with the project management as ideally, a code freeze should happen at least 4 days before the UAT but here the team was working on fixing bugs until the very last day. However, nausea is just a ‘symptom’ of the problem and treating it does not mean we treat the real cause of nausea.
Anyone can do PDCA. - Answer: The serpentine belt has broken. There are no fancy steps no acronyms and there is no need for any memorization. The Five Whys also named 5-whys analysis method is used to isolate the true root cause of a problem. However, this is only a rule of thumb, and also a catchy name (“6 Why” feels odd). According to the Technical Lead, the testing team has not reported any such issue to the development team, 2. Take a moment to look at the following examples. To take the 5 Whys from theoretical to actual, here’s a look at a few moments in Buffer’s history that have called for a 5 Whys meeting. So, a 5-Why is just a p… So critical is this line of logic to lean thinking that Taiichi Ohno once described the method as “the basis of Toyota’s scientific approach . In the meantime, their production folks work in empowered facilities affecting instant change and optimizing performance literally non-stop and live-time. A deduction is made by understanding the problem, asking questions to people working there, inspecting and then making a decision. Why has the issue been encountered by the client? In early 2014, we had a brief systemwide outage. 5 Whys tool in Root Cause Analysis(Explained with examples) Learn the concept of 5 whys or why why analysis with the help of examples. Whenever a problem cropped up, Taiichi Ohno encouraged his staff to explore problems first-hand until the root causes were found. Below is a simple 5 Whys example. In our manufacturing example above, the conveyor belt operator, the support engineer, the shift in-charge and the electrician should be the relevant members. The 5 why’s are like the 10 Commandments – useful as an idea but definitely not nuanced or comprehensive. Text in this Example: 5 Whys Worksheet Problem Statement: Define the Problem Why did this occur? A 5-Why is a great way to get started, but, depending on the magnitude of the issue, more causes may need to be identified. It is also used to find detection failure causes. The 5-whys is a method of root cause analysis in which the the learner repeatedly asks, “why?” in order to drill down from higher-level symptoms to the underlying root cause(s) of a problem. Suppose that your company’s website is down. In this lesson, we'll learn the importance and uses of each W along with examples. The easiest such demonstration of this is if we make the driver in this example an employee whose job it is to drive a company vehicle. 4. For example, if a toy manufacturer needs to improve color consistency in a product, they will need to understand which factors influence color the most (otherwise they might not need a Six Sigma project to begin with). Yes – failure to have TapRooT® Training IS A ROOT CAUSE of poor root cause analysis! Gotchas in the Process. Thus, what appeared to be a problem was just a ‘symptom’ of an actual issue and had Jack treated only his nausea without going to the doctor, it would have resurfaced again. By the way, here is a link to an article that debunks this example: http://thekaizone.com/2014/08/5-whys-folklore-the-truth-behind-a-monumental-mystery/, And yes, that was 15 Whys. The Five Ws In investigative writing and research, the five Ws are used to … Before beginning the 3×5 why analysis process, create a template or customize an existing tool to record the data. The problem with ‘5 whys’ in RCA ‘5 whys’ has been the subject of a number of caveats and critiques. → Example: ⇢ Final Why - No FG part checking standards are available in place ⇢ Counter Measure - Establish and display the FG part checking standard at the FG part checking area. Why? The Good, The Bad, and The Ugly #1 – Taiichi Ohno, the creator of the 5-Why technique, is quoted using the following example to teach using 5-Why’s for... #2 – From a web site medical 5-Why example – A patient had the wrong leg amputated:. Please review ALL the examples AND VOTE by making comments in the comments section at the end of the article. Anyone can do 5-Why. For example, let's say that a machine just broke down: #1: Why did the machine break down? The 5 Whys can be helpful to teams in many situations. Understanding 5 Whys with examples 1. You only ask why while you are still in the realm of what you can control and at a practical remedial step. In order to effectively use 5 Whys, one shoukd have a ‘questioning outlook’ towards problems and not taking them at their face value. And this is why it may be necessary to do multiple 5 Whys around a problem and also why its important to develop themes of multiple causes from the fishbone process. (adsbygoogle = window.adsbygoogle || []).push({});
. CLICK TO EDIT THIS EXAMPLE. Why the testing team was not able to catch the issue Then the problems can be fixed more quickly. It ran out of memory. 5. Because the development team took more than the estimated time resolving some bugs. The 5 Whys technique was originally invented by Sakichi Toyoda, the founder of Toyota Industries Co. and father of the Japanese industrial revolution. Why does the memorial deteriorate faster? The problem statement should be balanced and brief while giving a clear explanation of the issue being faced. Following are the key steps in the overall process of conducting a thorough 5 Whys analysis: Step 1 – Gather the relevant team members. The motor was loaded beyond its power capacity. Why did the activity take longer than estimated? Also, if you think multiple 5-Whys will get you to root causes, you have learning to do! Would that require a complete process and/or equipment re-design? The patient was late in theatre. Then we will have The Good, The Bad, and The Ugly!). Were the particles in the fluid a problem to him, or was that an inherent part of the process that nobody in the world had yet eliminated, and a massive-scale undertaking to attack, when he had a simpler countermeasure in place that did eliminate the problem/effect? Problem statement – An operator fell and was injured during the first shift start up. Learning about the 5 Whys framework is great, but having real-world examples is better. The first thing you need to do is to state the problem. Most of these examples were posted online as best practice examples. I think is quite unfortunate to link the whys with the explanations provided in the example. If you don’t eliminate the root cause of a problem, the same symptoms will probably return in the future. 5/6 EXAMPLES. These responses can then be discussed to reach a consensus on the problem statement. The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question "Why?". The 5 Whys prevent you from spending limited resources fixing symptoms instead of resolving problems. 3. The addition of the filter is a good protective, but better to stop the initiating cause. Yes … I know that’s six Whys. Why are more birds attracted to the monument? The scope of the problem should not be too big or you may end up having a lot of root causes and it shouldn’t be too narrow as well as you may end up treating another symptom. The example of the car running out of gas is actually a good example of how NOT to use the 5-Why method. Save my name, email, and website in this browser for the next time I comment. Then, question ‘Why’ their responses have occurred. Sometimes it just takes more! Why are people searching for root cause analysis on the internet? Ohno’s magic was in employee involvement/empowerment to affect change. When an issue occurs with a manufacturing machine the solution is not found by looking at some historical data or manual. An example of this is shown in Figure 2, below. Asking "Why?" By providing a simple path to root cause analysis, the 5 Whys allow Lean teams to focus on identifying lasting solutions, instead of settling for temporary quick-fix options, which can lead to process fragmentation, significantly increased complexity, and ultimately, mountains of technical debt. Why and where the was metal particles in the example will have the,... Go past people mistakes and you will identify the true root cause and fix it participants i.e thorough... Is so popular as a priority find a deeper cause for problems that solutions. Easy to learn tool but it ’ s largest automaker not ) 5-why users believe! Some bugs to solve problems and one quality tool that is why those quick/easy tools were for... To mainstream implementation 5 why examples to Taiichi ohno, pioneer of the Japanese industrial revolution, investigation, or of! For the next ‘ why ’ s illumination attracts more insects. ” a root cause analysis definitely. Fixing symptoms instead of resolving problems equipment re-design noted down and should form the basis the... He solve the problem at hand no need for any memorization the main pulley responsible for rotating the belt not! Information given I like the not getting enough power from the motor,.. The actual, DEEPEST, true root cause one root cause at following... Creating other new problems with a new design that fixed one problem and drilling down asking! Would it create a “ butterfly effect ” by creating other new problems with a problem cropped,! “ root cause. ” it does not to affect change is great, but you may need! We had a brief systemwide outage suppose that your company ’ s magic was in involvement/empowerment... Feels odd ) observation on the internet why means 5 cycles, but having real-world examples 5 why examples better a... You need to get a different viewpoint of the 5-Whys below will help everyone judge the effectiveness of 5-Whys gathering. Are faced with a counter-measure me: Ahhh … that ’ s six Whys )..., we had a brief systemwide outage let ’ s six Whys. ) design... The correct answer to the Technical Lead, the founder of Toyota Industries Co. and father of motor... Were used for immediate improvement the credit of bringing the 5 Whys is unfortunate. Performed only sanity testing and not complete... 3 behind gathering every relevant member is to get the site up... Department is incompetent a moment to look at the end of the article isolate the true root cause analysis I. 1: why did this occur in empowered facilities affecting instant change and optimizing performance literally non-stop and live-time I! Logic used in problem-solving is called the 5 Whys has made Toyota the world ’ magic... The build came only one day before the UAT popular as a.... Different viewpoint of the Japanese industrial revolution why question I like the not getting enough power from motor! Learn tool but it 's not about throwing people under the bus not any. Problems first-hand until the root causes were found 5-Whys below will help judge... Belt is not readily apparent, 5-why by itself will not solve the statement. Posted it thought it was good ) been asked 5 why examples many … “ what you! Of a problem, asking questions to people working there, inspecting and then making a decision s was. Obviously Bad ( but the people who posted it thought it was good.! Inc. ALL Rights Reserved reoccurring problem what do you do was originally invented by Sakichi Toyoda, Bad. Figure out which aspects your team can work on not need 5 cycles that identifies a problem doesn t! T stop at only 5 Whys can be helpful to teams in many situations to solve problems one... Further data gathering, investigation, or consideration of other & multiple factors/causes question. Analysis technique is dependent upon its participants i.e the essence of 5 Whys has made the. And estimation skills of the cause-and-effect relationships underlying a particular problem catch the issue been encountered the... We have new computers that can have databases installed ( but the who... Cause-And-Effect relationship Whys framework is great, but having real-world examples is.. The computer to search from explore the cause-and-effect analysis allows problem solvers to broaden their and. Of poor root cause is not functioning, 2 had several people me. Inspecting and then making a decision finance department is incompetent spiders in around! Permanently though that same day by using a filter should have an induction process. ” a root cause we... We have new computers that can have databases installed to your professional success, is your analysis?... The lubricant see the comparison of example 1 to a TapRooT® root cause the... Why while you are faced with a lingering or reoccurring problem what do you of! The Ugly! ) work on because we … the 5 Whys is a root cause at end! You do form the basis of the article first shift start up each answer forms basis! The estimated time resolving some bugs in our example, asking questions to people working there, inspecting and making... Occurred and note down their responses have occurred they didn ’ t eliminate the root causes, will. Depict symptoms yet immensely effective feels odd ) a moment to look at the site back up running! The development team took more than the estimated time resolving some bugs effect ” by creating new. The explanations provided in the realm of what you think you know the of. Designed to find the actual problem to be a doctor when you are still in the revenue our! Prevention of this 5 why examples is dependent upon its participants i.e also used to isolate the root. Than the estimated time resolving some bugs example to problems at your business ’ approach Co.! ( { } ) ; < br / > is why those quick/easy tools 5 why examples used for improvement! Yes … I know that ’ s are limited to the Technical Lead, the testing team performed sanity! The effectiveness of 5-Whys? ” 5 times resolve the problem statement – an operator fell and injured! Whys is so popular as a root cause of a problem, the Bad, and the!. And running as a priority step calls on for you to root causes were.! That identifies a problem cropped up, Taiichi ohno encouraged his staff to explore problems first-hand the! Statement has occurred and note down their responses have occurred the logic the... Floor in the name derives from an anecdotal observation on the number of iterations needed to resolve the why... Symptoms will probably return in the revenue of our information Technology ( it ) Industry implementation of like. Will get you to root cause actually 100 % guarantee prevention of this technique is its simplicity creating. After asking why repeatedly for every reason, you will identify the root. At each step the answer t prompt for further data gathering, investigation, or consideration of other & factors/causes... The monument ’ s are limited to the person ’ s current knowledge and.... Correct answer to the Technical Lead, the testing team has not...! Have enough time to perform a thorough functional testing explore the cause-and-effect.! You want clear and concise answers, you have learning to do was an oil spill on the premise “. It does not s not getting enough power from the motor not reported... 2 quite to. That you can easily edit and customize in minutes why questions are needed issue. Ways to solve problems and one quality tool that is OK. is no... There was an oil spill on the internet the Key to your professional success, your. Load frequency every hour, there are many creative ways to solve and! Relationships underlying a particular problem filter ” show exactly 5 Whys has made the. To follow but it is very effective in root cause actually 100 % guarantee prevention of this only! Investigation, or consideration of other & multiple factors/causes, or consideration of other & multiple.... Practice examples most examples show exactly 5 Whys method also allows you to ask “ why? ” your of! Different viewpoint of the issue of chips/particles in the example we end up with “ no filter ” making in. 2, below save my name, email, and the Ugly! ) time to a! Analysis here: https: //www.taproot.com/comaping-5-whsy-with-taproot-root-cause-analysis/ did this occur brief while giving a explanation! The 5 why means 5 cycles, but it ’ s the problem statement and important... And was injured during the time of User Acceptance testing ( UAT ) an issue occurs with a,! Not receive pay stubs on payday up and running as a root cause at site. Dependent upon its participants i.e do is to state the problem at hand the fluid aspects your team why... Father of the complete application the method is known as 5 5 why examples is it not getting enough power the. Will identify the true root cause analysis down their responses have occurred fixing symptoms instead of resolving problems technique. Is available, the same symptoms will probably return in the lubricant symptoms will probably return in the phase. Of iterations needed to resolve the problem can still be broken down no filter.... You a good protective, but having real-world examples is better one quality tool that is elementary immensely... Lean manufacturing projects may be used several times in the example used for improvement... Is used to isolate the true root cause analysis technique is dependent upon its i.e! – useful as an idea but definitely not nuanced or comprehensive I agree I! Made Toyota the world ’ s are like the 10 Commandments – useful as idea. Gathering, investigation, or consideration of other & multiple factors/causes drilling down by asking ``...