There are several versions and claimed authors for this note. Quoteinvestigator has a nice article investigation on the sources:
Blog Archive
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Structured Problem Solving
Definition Wikipedia term: Problem solving consists of using generic or ad hoc methods, in an orderly manner, for finding solutions to problems. […]
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Fight against procrastination
In 2015 let’s fight against procrastination! Let’s apply some structured problem solving method. For a start let’s try a definition: Wikipedia explains […]