I just listened to a great LeanBlog podcast episode on Dr. Sami Bahri, The World’s First Lean Dentist. Really amazing; this guy was unhappy with how his dental practice was going (e.g. very bad on-time performance, very long wait times), did some reading, and thought this lean stuff would help. Despite the fact, of course, that the vast majority of the lean literature is about manufacturing, which doesn’t have a whole lot to do with dentistry.
And he seems to have done a brilliant job of adapting lean concepts to his situation. He (and his employees) recast the concept of single piece flow as single patient flow, with a remarkably small amount of waste of the patients’ time. They’re shown into a chair within seconds of arriving, treatment begins almost immediately, the practice somehow manages to keep enough flexibility that they can do all the treatment necessary for a given patient in one shot instead of having to schedule further followup appointments for problems that are, say, identified during treatment.
It sounds like he’s got “respect for the individual” down pat, too: all the staff is involved in experimenting and improving, they do tons of crosstraining so people don’t get pigeonholed, and staff turnover is extremely low. And, of course, he hasn’t laid anybody off as a result of the increased efficiency: my favorite example was one of his employees who managed to transform verifying patients’ insurance from a full-time job into a job that takes three and a half hours a month. She was bored for a little while while they were figuring out how to best deploy her skills, after she’d basically transformed her own job out of existence through improved efficiency, but now she’s happily working in other areas of the practice.
Really fascinating.
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I have been following the discussion of leanness here only in the most fragmentary way, so let me ask a completely naive question to help my understanding: Could there be, even in principle, a lean math department? What would it be?
8/29/2007 @ 8:21 pm
[…] Jordan asked: Could there be, even in principle, a lean math department? What would it be? […]
8/29/2007 @ 9:23 pm
I wonder if there can be lean (or Agile) electrical engineering? Unlike software a partially-captured schematic isn’t too useful. I know that one can check for unconnected pins, missing off-page connections, etc. but beyond that it isn’t testable. And the pull from customers looks a lot like business development pushing what cards need to be designed.
8/30/2007 @ 5:56 am
I’m pretty sure that Toyota’s lean product development ideas would transfer fairly directly to electrical engineering. I think probably software in in a strange position in that, while it is also product development, we can apply an unusual number of lessons from manufacturing to it, since we can potentially deliver real customer value in very small increments. But my guess is that many of the ideas that Toyota uses to develop new cars could be used for electrical engineering as well.
I wish I understood lean product development better; I’ve read a couple of books on the subject, but I don’t really understand the core concepts. Actually, I’m not even completely convinced that anybody outside of Toyota undestands the core concepts, but that might be undue pessimism on my part.
8/30/2007 @ 7:53 am
No, undue pessimism (speaking as the master) would be not being completely convinced that anybody inside Toyota understands the core concepts.
8/30/2007 @ 10:11 am
Thanks for the nice post.
I just wanted to tell Jordan, Brian and David that I have no doubt that lean management applies to a math department as well as to electrical engineering. In fact it applies to anything.
I had a lot of doubt myself about applying it to dentistry. I 2000, I had not seen the kind of improvement I was hoping for, so I started learning Six Sigma. It wasn’t until 2004-5 that I saw some real benefits, after I understood and applied the principles.
I wish you would create the first lean math department and the first lean electrical engineering management system.
Best Regards
Sami Bahri
8/31/2007 @ 9:28 pm