Nov 10 2011
Opinels, swiss knives, smart phones, and production machinery
Using Opinel knives while picnicking last summer got me thinking about their differences in design philosophy from Swiss knives, our traditional perception of multifunction tools, and how smart phones and machining centers contradict that perception.
Mostly known for snow-capped mountains, the Savoie region of France is also the birthplace of the Opinel, a pocket knife designed 120 years ago, and very popular there with anybody who hikes or just goes on a picnic. As you can see below, it is a simple knife with a sharp, pointed blade, and a ring to lock it closed or open.
As a concept, it is diametrically opposed to its cousin, the swiss knife, and its multiple functions:
The Opinel only has one function, but performs it well; the swiss knife has many but does not excel at any. It will cut, but not as well as the Opinel; it serves as a corkscrew, but provides no leverage to pull out the cork; it will open cans, but slowly and by pulling the sharp edge of the lid outwards towards your hand rather than into the can, etc. It is convenient because you only have to carry one tool around, but, for everything it does, there is a dedicated tool that does it better.
When we think of dedicated versus multifunction tools, we usually think that they are like Opinels and swiss knives and that, when we add more functions to a tool, we necessarily compromise on performance or quality for each function. But is that necessarily true?
Our smartphones let us talk to each other but also contain the contact data of everyone we have met since elementary school. They tell you where we are on precise maps, wake us up in the morning, work as stopwatches and egg timers, play our music, receive our favorite radio station, identify a song from a snippet of a recording, etc.
Dedicated tools do not exist for everything a smartphone does and, when they do, rarely outperform the smartphone apps. For example, I have not seen an alarm clock do more than the clock app on my phone in terms of selecting whether it rings just once or every weekday at the same time, how loud, with what sound, etc.
What is it that makes a smartphone different from other multifunction devices? In what way is it not like a swiss knife?
The short answer is that a smartphone is a computer. We often think of computers as machines like any other, or worse when we are frustrated with confusing interfaces or system crashes, but the reality is that they are qualitatively different, and that programmability allows them to outperform dedicated tools. Their hardware configurations make them smartphones, game systems, laptops, or industrial controllers but, within this context, the range of services they can render well is limited only by the imagination and talent of programmers.
In production, machining centers or computer-controlled fabrication facilities are not swiss knives, in that their flexibility is not bought by a compromise in performance, and this has far-reaching consequences on production engineering and operations.
Feb 11 2022
Scientific Thinking and Manufacturing Improvement
“Scientific thinking” appears more and more in discussions of Lean, Kaizen, or TPS. What is it? Well, it’s the way scientists think. In reality, however, talk to actual scientists about PDCA, DMAIC, the 8D, A3 thinking, Why-Why analysis, TRIZ, or even statistical design of experiments, and their eyes glaze over. Most will have no idea what these methods are. This is true for physicists, chemists, biologists, or even economists. If you elaborate, they will dismiss these tools as trivial or devoid of any connection with their work.
Improving how things are made does make the world a better place but it’s not science. By growing a body of knowledge that is our greatest asset as a species, scientists make another contribution, that we should recognize as different.
By Michel Baudin • Laws of nature • 1 • Tags: Engineering, Management, Manufacturing, Scientific Thinking, Technology