By Jon Miller | Post Date: October 26, 2009 12:15 PM | Comments: 1
I became aware of a truth about lean problem solving and kaizen yesterday while reading an article about ten internet rules and laws.
4. Skitt's Law
Skitt's Law applied to kaizen would be "any action to solve a problem will contain at least one problem itself" or "the likelihood of a problem resulting from a proposed solution is directly proportional to the embarrassment it will cause" to the person who is promotion the particular solution. Just as all standards should be considered temporary until improved, all improvement ideas should be considered provisional until they are not proven to be ineffective. Too many times people approach problem solving or kaizen as a process of championing a favored solution, only to be blinded by its failings. This results in embarrassment when a solution proves ineffective but the organization has already committed too much time and resource, as well as personal reputations, and it is difficult to change course gracefully at that point.
We should keep in mind Skitt's Law and assume that all kaizen ideas are full of holes, no single countermeasure will solve the problem entirely, and that some countermeasures may solve one problem but cause another. Toyota uses the term "countermeasure" for a reason, rather than "solution" because they understand problem solving to a taking a series of measures to counter root causes of problems, rather than to put so-called solutions in place and moving on.
As with anything, kaizens can contain errors. Many times the countermeasures are the result of solution-jumping and shallow or non-existent root cause analysis. Just like we should run spell check before sending out a piece of writing, we should spell check our problem solving thought process by tracking the solution back through the root cause to the original problem statement using the "therefore" or "so what" test.
The kaizen process must be inherently self-skeptical. While being confident that we can surely solve all problems (the what), we should always be challenging the method or solution itself (the how). The PDCA cycle is all about checking and adjusting our plan, learning from the result of the do phase. The learning is as important, if not often more important, than the solution that is put in place. Remember Skitt's Law and check your work. Don't fall in love with your kaizen ideas because love will blind you. Keep a healthy skepticism and be prepared to love and nurture all kaizen ideas.
Speaking of healthy skepticism, there were two other laws also worthy of note:
8. DeMyer's Laws
And to bolster my argument with another quote from the internet,
7. Pommer's Law
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