Navigating Quality: Acceptability vs. Desirability

Is reaching A+ quality always the right answer? What happens when you consider factors that are part of the system, and not just the product in isolation? In this episode, Bill Bellows and Andrew Stotz discuss acceptability versus desirability in the quality realm.

TRANSCRIPT

0:00:02.5 Andrew Stotz: My name is Andrew Stotz and I'll be your host as we continue our journey into the teachings of Dr. W. Edwards Deming. Today, I'm continuing my discussion with Bill Bellows, who has spent 31 years helping people apply Dr. Deming's ideas to become aware of how their thinking is holding them back from their biggest opportunities. Today's episode, episode three, is Acceptability and Desirability. Bill, take it away.

0:00:28.1 Bill Bellows: Thank you, Andrew, and welcome back to our listeners.

0:00:30.7 AS: Oh, yeah.

0:00:31.4 BB: Hey, do you know how long we've been doing these podcasts?

0:00:36.6 AS: No.

0:00:40.8 BB: We started... Our very first podcast was Valentine's Day 2023. I was gonna say 2013. 2023, so roughly 17 months of podcast, Andrew.

0:00:53.4 AS: That was our first date, huh?

0:00:55.0 BB: Our first date was Valentine's Day 2023.

0:00:58.9 AS: All right. Don't tell your wife.

[laughter]

0:01:03.1 BB: All right. And so along the way, I've shared reflections from my first exposures to Dr. Deming, as well as my first exposures to Genichi Taguchi. Talked about Edward de Bono, Tom Johnson, others, mentors, Bill Cooper, Phil Monroe, Gipsie Ranney was a great mentor. Last week, Andrew, while on vacation in New England with my wife, I visited for a day my 85-year-old graduate school advisor who I worked with for ten years, Bob Mayle, who lives in, I would say, the farthest reaches of Maine, a place called Roque Bluffs. Roque Bluffs. How's that for... That could be North Dakota. Roque Bluffs. He's in what they call Down East Maine. He's recently got a flip phone. He's very proud. He's got like a Motorola 1985 vintage flip phone. Anyway, he's cool, he's cool. He's...

0:02:15.9 AS: I'm just looking at that place on the map, and looks incredible.

0:02:19.0 BB: Oh, yeah. He's uh, until he got the phone, he was off the grid. We correspond by letters. He's no internet, no email. And he has electricity, lives in about an 800 square-foot, one-floor bungalow with his wife. This is the third time we've visited him. Every time we go up, we spend one day getting there, one day driving home from where my in-laws live in New York. And then one day with him, and the day ends with going to the nearby fisherman's place. He buys us fresh lobster and we take care of them. [chuckle]

0:03:01.3 AS: Yeah, my sister lives in Kennebunk, so when I go back to the US, I'm...

0:03:08.8 BB: Yeah, Kennebunk is maybe 4 hours away on that same coast.

0:03:15.3 AS: I'm just looking at the guide and map book for Roque Bluffs' State Park, and it says, "a beautiful setting with oceanfront beach, freshwater pond, and hiking trails."

0:03:25.9 BB: Yeah, he's got 10 acres... No, he's got, I think, 20, 25 acres of property. Sadly, he's slowly going blind. He has macular degeneration. But, boy, for a guy who's slowly going blind, he and I went for a walk around his property for a couple hours, and it's around and around... He's holding branches from hitting me, I'm holding branches from hitting him and there's... Let alone the terrain going up and down, you gotta step up and over around the rocks and the pine needles and all. And it was great. It was great. The week before, we were close to Lake George, which is a 32-mile lake in Upstate New York. And what was neat was we went on a three-hour tour, boat ride. And on that lake, there are 30 some islands of various sizes, many of them owned by the state, a number of them owned privately. Within the first hour, we're going by and he points to the island on the left and he says it was purchased in the late '30s by Irving Langmuir. Yeah, so he says, "Irving Langmuir," and I thought, I know that name from Dr. Deming. That name is referenced in The New Economics.

0:04:49.1 BB: In fact, at the opening of Chapter Five of The New Economics, the title is 'Leadership.' Every chapter begins with a quote, right? Chapter Five quote is, "You cannot plan to make a discovery," so says Irving Langmuir. So what is... The guy's describing this island purchased back in the late '30s by Langmuir for like $5,000. I think it's... I don't know if he still owns it, if it's owned by a nonprofit. It's not developed. It's privately held. I'm trying, I wrote to Langmuir's grandson who did a documentary about him. He was a Nobel Prize-winning physicist from GE's R&D center in Schenectady, New York, which is a couple hours south of there. But I'm certain, and I was looking for it earlier, I know I heard of him, of Irving Langmuir through Dr. Deming. And I believe in his lectures, Deming talked about Langmuir's emphasis on having fun at work, having fun. And so I gotta go back and check on that, but I did some research after the day, and sure enough came across some old videos, black and white videos that Langmuir produced for a local television station, talking about his... There's like show and tell with him in the laboratory. And in there, he talks about joy and work and all that.

0:06:33.5 BB: So I'm thinking, that's pretty cool. So I'm waiting to hear from his grandson. And ideally, I can have a conversation with his grandson, introduce him to Kevin and talk about Deming's work and the connection. Who knows what comes out of that? Who knows? Maybe an interview opportunity with you and Irving Langmuir's grandson. So, anyway.

0:06:52.7 AS: Fantastic.

0:06:54.7 BB: But going back to what I mentioned earlier in my background in association with Deming and whatnot, and Taguchi, and I offer these comments to reinforce that while my interests in quality were initially all things Taguchi, and then largely Deming, and it wasn't long before I stopped, stepped back and an old friend from Rocketdyne 20 some years ago started focusing on thinking about thinking, which he later called InThinking. And it's what others would call awareness of our... Well, we called it... Rudy called it, better awareness of our thinking patterns, otherwise known as paradigms, mental models.  We just like the way of explaining it in terms of becoming more aware of our thinking patterns. And I say that because... And what I'm presenting relative to quality in this series, a whole lot of what I'm focusing on is thinking about thinking relative to quality.

0:07:58.8 BB: And so last time, we talked about the eight dimensions of quality from David Garvin, and one of them was acceptability. And that is this notion in quality, alive and well today, Phil Crosby has created this focus on achieving zero defects. Everything meets the requirements, that gets us into the realm, everything is good. Dr. Deming and his red bead experiments talked about red beads and white beads. The white beads is what we're striving for. All the beads are good. The red beads represent defects, things we don't want. And that's this... Thinking wise, that's a thinking pattern of "things are good or bad." Well, then we can have high quality, low quality and quality. But at Rocketdyne, when I started referring to that as category thinking, putting things into categories, but in the world of quality, there's only two categories, Andrew: good and bad. This either meets requirements or it doesn't. And if it's good, then we're allowed to pass it on to the next person. If we pass it on and it's not good, then they're going to send it back to us and say, "Uh-uh, you didn't meet all the requirements." And what I used to do in class, I would take something, a pen or something, and I would go to someone in the seminar and I'd say, "If I hand this to you and it doesn't meet requirements, what are you going to say?" You're gonna say, "I'm not going to take it. It hasn't met the requirements."

0:09:36.4 BB: And I would say you're right. All the I's are not dotted, all the T's are not crossed, I'm not taking it. Then I would take it back and I'd say, "Okay, now what if I go off and dot all those I's and cross all those T's?" Then I would hand them the pen or whatever the thing was, and I'd say, "If all those things have been met," now we're talking acceptability. "Now, what do you say?" I said, "Can you reject it?" "No." I say, "So what do you say now that all those things... If you're aware that all those requirements have been met, in the world of quality, it is as good, now what do you say?" And they look at me and they're like, "What do I say?" I say, "Now you say, thank you." But what I also do is one more time... And I would play this out to people, I'd say, "Okay, Andrew, one more time. I hand you the pen, Andrew, all the requirements are met. And what do you say?" And you say, "Thank you." And I say, "What else just happened when you took it?"

0:10:45.4 AS: You accepted it.

0:10:47.3 BB: Yes. And I say, "And what does that mean?" "I don't know. What does that mean?" I said, "It means if you call me the next day and say, I've got a problem with this, you know what I'm going to say, Andrew?"

0:10:58.5 AS: "You accepted it."

0:11:01.5 BB: Right. And so, what acceptability means is don't call me later and complain. [laughter] So, I get a photo of you accepting it, you're smiling. So if you call me back the next day and say, "I've got a problem with this," I'd say, "No, no, no." So acceptability as a mental model is this idea that once you accept it, there's no coming back. If you reveal to me issues with it later, I deny all that. I'd say, I don't know what your problem with Andrew... It must be a problem on your end, because what I delivered to you is good. And if it is good, then there can't be any problems associated with it. So, if there are problems, have to be on your end, because defect-free, everything good, implies, ain't no problems, ain't no issues with it. I'm thinking of that Disney song, trouble-free mentality, Hakuna Matata.

[chuckle]

0:12:04.5 BB: But now I go back to the title, Acceptability and Desirability. One of Dr. Deming's Ph.D. students, Kauro [actually, Kosaku] Yoshida, he used to teach at Cal State Dominguez Hills back in the '80s, and I think sometime in the '90s, he went to Japan. I don't know if he was born and raised in Japan, but he was one of Dr. Deming's Ph.D. students, I believe, at NYU. Anyway, I know he's a Ph.D. student of Dr. Deming, he would do guest lectures in Dr. Deming's four-day seminars in and around Los Angeles. And, Yoshida is known for this saying that Americans are all about acceptability meets requirements, and the Japanese are about desirability. And what is that? Well, it's more than meeting requirements. And, I wanna get into more detail on that in future episodes. But for now, we could say acceptability is meeting requirements. In a binary world, it can be really hard to think of, if everything's met requirements, how do I do better than that? How do I continue to improve if everything meets requirements?  Well, one clue, and I'll give a clue, is what I shared with the senior most ranking NASA executive responsible for quality.

0:13:46.4 BB: And this goes back to 2002 timeframe. And we had done some amazing things with desirability at Rocketdyne, which. is more than meeting requirements. And the Vice President of Quality at Rocketdyne knew this guy at NASA headquarters, and he says, "You should go show him what we're doing." So I called him up a week in advance of going out there. I had made the date, but I figured if I'm going to go all the way out there, a week in advance, I called him up just to make sure he knew I was coming. And he said something like, "What are we going to talk about?" He said something like, "We're going to talk about that Lean or Six Sigma stuff?" And I said, "No, more than that." And I think I described it as, we're going to challenge the model of interchangeable parts. And he's like, "Okay, so what does that mean?" So the explanation I gave him is I said, "What letter grade is required for everything that NASA purchases from any contractor? What letter grade is ostensibly in the contract? What letter grade? A, B, C, D. What letter grade is in the contract?" And he says, "Well, A+."

[laughter]

0:15:01.2 BB: And I said, "A+ is not the requirement." And he's like, "Well, what do you mean?" I said, "It's a pass-fail system." That's what acceptability is, Andrew. Acceptability is something is either good or bad, and if it's bad, you won't accept it. But if it's good, if I dot all the I's and cross all the T's, you will take it. It has met all the requirements. And that gets into what I talked about in the first podcast series of what I used to call the first question of quality management. Does this quality characteristic, does the thrust of this engine, does the roughness of this surface, does the diameter of this hole, does the pH of this bath meet requirements? And there's only two answers to that question, yes or no. And if yes is acceptable, and if no, that's unacceptable. And so I pointed out to him, much to his chagrin, is that the letter grade requirement is not A+, it's D- or better. [chuckle] And so as a preview of we'll get into in a future podcast, acceptability could be, acceptability is passing. And this guy was really shocked. I said, "Procurement at NASA is a pass-fail system."

0:16:21.9 BB: Every element of anything which is in that system purchased by NASA, everything in there today meets a set of requirements, is subject to a set of requirements which are met on a pass-fail basis. They're either, yes, it either meets requirements, acceptable, or not. That's NASA's, the quality system used by every NASA contractor I'm aware of. Boeing's advanced quality system is good parts and bad parts. Balls and strikes. And so again, for our viewers, acceptability is a pass-fail system. And what Yoshida... You can be thinking about what Yoshida's talked about, is Japanese companies. And again, I think it's foolish to think of all Japanese companies, but back in the '80s, that's really the way it came across, is all Japanese companies really have this figured out, and all American companies don't. I think that's naive. But nonetheless, what he's talking about is shifting from a pass-fail system, that's acceptability, to, let's say, letter grades of A's or B's. That would be more like desirability, is that it's not just passing, but an A grade or a B grade or a C grade. So that's, in round terms, a preview of Yoshida... A sense of, for this episode, of what I mean by acceptability and desirability.

0:17:54.7 BB: In the first podcast which was posted the other day, I made reference to, instead of achieving acceptability, now I can use that term, instead of achieving zero defects as the goal, in the world of acceptability, once we continuously improve and achieve acceptability, now everything is passing, not failing. This is in a world of what I refer to as category thinking, putting things in categories. In the world of black and white, black is one category, white is a category. You got two categories, good and bad. If everything meets requirements, how do you continuously improve if everything is good? Well, part of the challenge is realize that everything is good has variation in terms... Now we could talk about the not all letter grade A, and so we could focus on the things that are not A's and ask the question, is an A worthwhile or not? But what I was saying in the first podcast is my admiration for Dr. Deming's work uniquely... And Dr. Deming was inspired towards this end by Dr. Taguchi, and he gave great credit to that in Chapter Ten of The New Economics. And what I don't see in Lean nor Six Sigma, nor Lean/Six Sigma, nor Operational Excellence, what I don't see anywhere outside of Dr. Deming's work or Dr. Taguchi's work is anything in quality which is more than acceptability.

0:19:32.0 BB: It's all black and white. Again, Boeing's Advanced Quality System is good parts and bad parts. Now, again, I'm not suggesting that there's anything wrong with that. And I would also suggest in a Deming-based organization there may be characteristics for which all we need is that they're good. We don't need to know how good they are, we don't need to know the letter grade. And why is that? Because maybe it's not worth the trouble to discern more than that. And this is where I use the analogy of balls and strikes or kicking the ball into the net.  If you've got an open net... That's Euro Cup soccer. There's no reason to be precisely placing the ball. All you want to do is get it into the net. And that's an area of zero defects, maybe all that is worthwhile, but there could be other situations where I want the ball in a very particular location in the strike zone. That's more of this desirability sense. So I want to clarify for those who listened to the first podcast, is what I'm inferring is I'm not aware of any quality management system, any management system in which, inspired by Dr. Deming and Taguchi, we have the ability to ask the question, is acceptability all that is required?

0:20:55.7 BB: And it could be for a lot of what we do, acceptability is not a bad place to be. But I'm proposing that as a choice, that we've thought about it and said, "You know what? In this situation, it's not worth, economically, the extra effort. And so let's put the extra effort into the things where it really matters." And if it doesn't... So use desirability where it makes sense, use acceptability elsewhere. Right now, what I see going on in organizations unaware of Dr. Deming's work, again, Dr. Taguchi's work, is that they're really blindly focusing on acceptability. And I think what we're going to get into is, I think there's confusion in desirability. But again, I want to keep that for a later episode. Now, people will say, "Well, Bill, the Six Sigma people are about desirability." No, the Six Sigma people have found a new way to define acceptability. And I'll give you one other fun story. When I taught at Northwestern's Kellogg Business School back in the late '90s, and I would start these seminars off by saying, "We're going to look at quality management practices, past, present, future." And so one year, I said, "So what quality management practices are you aware of?" And again, these are students that have worked in industry for five or six years.

0:22:17.6 BB: They've worked at GM, they worked at General Electric, they worked for Coca Cola, banking. These are sharp, sharp people. But you got into the program having worked somewhere in the world, in industry, so they came in with experience. And so they would say, zero defect quality is a quality management practice. And I'd say, "Okay, so where'd that come from?" And again, this is the late '90s. They were aware of the term, zero defects. They didn't know it was Philip Crosby, who I learned yesterday was... His undergraduate degree is from a school of podiatry. I don't know if he was a podiatrist, but he had an undergraduate... A degree in podiatry, somebody pointed out to me. Okay, fine. But Philip Crosby, his big thing was pushing for zero defects. And you can go to the American Society for Quality website to learn more about him. Philip Crosby is the acceptability paradigm. So, students would bring him up and I'd say, "Okay, so what about present? What about present?" And somebody said, "Six Sigma Quality." So I said, "So what do you know about Six Sigma Quality?" And somebody said," Cpk’s of 2.00." And I said, "So what's... " again, in a future episode, we could talk about Cpk’s."

0:23:48.5 AS: But I said to the guy, "Well, what's the defect rate for Six Sigma... For Cpk's or Six Sigma Quality or Cpk's of 2?" And very matter of factly, he says, "3.4 defects per million." So I said, "How does that compare to Phil Crosby's quality goal from 1962? Here we are, 1997, and he's talking about Motorola and Six Sigma Quality, a defect goal of 3.4 defects per million. And I said, "How does that compare to Phil Crosby's quality goal of zero defects in 1962?" And the guy says... [chuckle] So cool, he says, "Well, maybe zero is not worth achieving." 'Cause again, zero was the goal in 1962. Six Sigma sets the goal for 3.4 per million. Not zero, 3.4, to which this guy says... And I thought it was so cool, he says, "Well, maybe zero is not worth achieving." So, there. Well, my response was, "Well, what makes 3.4 the magic number for every process in every company around the world? So, what about that?" To which the response was crickets. But what I want to point out is we're still talking about zero... I mean 3.4 is like striving towards zero and admitting some. It is another way of looking at acceptability. It is... And again, and people claim it's really about desirability. I think, well, there's some confusion in desirability and my hope in this episode is to clear up some of that misunderstanding in acceptability as well as in desirability. And they... Let me just throw that out.

0:25:58.1 AS: Yeah, there's two things that I want to say, and the first one is what he should have replied is, for those older people listening or viewing that can remember the movie, Mr. Mom with Michael Keaton, I think it was. And he should have replied, "220, 221, whatever it takes." And he should have said, "Well, yeah, 3.4, 3.5, 3.6. It's could be around there."

0:26:27.5 BB: Well, the other thing is, why we're on that is... And I think this is... I'm really glad you brought that up, is, what I would push back on the Lean and the Six Sigma, those striving for zero defects or Cpk's of 2 or whatever they are is, how much money are we going to spend to achieve a Cpk of 2, a zero defects? And again, what I said and... Well, actually, when I posted on LinkedIn yesterday, "I'm okay with a quality goal of 3.4 defects per million." What I'm proposing is, instead of blindly saying zero defects is the goal and stop, or I want Cpk’s of 1.33 or whatever they are everywhere in the organization, in terms of the economics of variation or the new economics, is how much money are we going to spend to achieve zero or 3.4 or whatever it is? And, is it worth the return on the investment? And this is where Dr. Taguchi's loss function comes in.

0:27:49.2 BB: And so what I'm proposing, inspired by Genichi Taguchi and W. Edwards Deming is, let's be thinking more about what is... Let's not blindly stop at zero, but if we choose to stop at zero, it's an economic choice that it's not worth the money at this time in comparison to other things we could be working on to improve this quality characteristic and that we've chosen to be here... Because what I don't want people to think is what Dr. Deming and Taguchi are talking about is we can spend any amount of money to achieve any quality goal without thinking of the consequences, nor thinking about, how does this goal on this thing in isolation, not make things bad elsewhere. So we have to be thinking about a quality goal, whether it's worth achieving and will that achievement be in concert with other goals and what we're doing there? That's what I'd like people thinking about as a result of this podcast tonight.

0:28:56.0 AS: And I think I have a good way of wrapping this up, and that is going back to Dr. Deming's first of his 14 Points, which is, create constancy of purpose towards improvement of product and service with the aim to become competitive, to stay in business, and to provide jobs. And I think that what that... I link that to what you're saying with the idea that we're trying to improve our products and services constantly. We're not trying to improve one process. And also, to become competitive in the market means we're improving the right things because we will become more competitive if we are hitting what the client wants and appreciates. And so... Yeah.

0:29:46.3 BB: But with regard to... Absolutely with regard to our customers, absolutely with regard to how it affects different aspects of our company, that we don't get head over heels in one aspect of our company and lose elsewhere, that we don't deliver A+ products to the customer in a losing way, meaning that the A+ is great for you, but financially, we can't afford currently... Now, again, there may be a moment where it's worthwhile to achieve the A... We know we can achieve the A+, but we may not know how to do it financially. We may have the technology to achieve that number. Now, we have to figure out, is, how can we do it in an economically advantaged way, not just for you, the customer, but for us. Otherwise, we're losing money by delivering desirability. So it's gotta work for us, for you, but it's also understanding how that improvement... That improvement of that product within your overall system might not be worthwhile to your customer, in which case we're providing a... The classic...

0:31:18.8 AS: You're not becoming competitive then.

0:31:21.8 BB: The better buggy whip. But that gets into looking at things as a system. And this is... What's invaluable is, all of this is covered with a grasp of the System of Profound Knowledge. The challenge is not to look at goals in isolation. And even I've seen people at Lean conferences quote Dr. Deming and his constancy of purpose and I thought, well, you can have a... A non-Deming company has a constancy of purpose. [chuckle]  The only question is, what is the purpose? [laughter] And that's when I thought, a constancy of purpose on a focus on acceptability is good provided all of your competitors are likewise focusing on acceptability. So I just be... I just am fascinated to find people taking Deming's 14 Points one at a time, out of context, and just saying, "Well, Dr. Deming said this." Well, there we go again. [laughter]

0:32:29.9 AS: Bill, on behalf of everyone at The Deming Institute, I want to thank you again for this discussion. For listeners, remember to go to deming.org to continue your journey. If you want to keep in touch with Bill, just find him on LinkedIn. This is your host, Andrew Stotz. And I'll leave you with one of my favorite quotes from Dr. Deming, "People are entitled to joy in work."