Excerpts and pure thread hack. Unless the conclusion interests you too.
Example. Suppose the CD authors felt what they did was good; because they only sensed good results. Good, that issues were not analyzed correctly in the first place. So how could they know where they were, without realizing a starting point, maybe even effects of path between. Hello, Scientific Method?
The televised series [last year] on creation of Harley Davidson, or the current "Genius " on Albert Einstein show these well. I can't attest historic accuracy, the screenplays hold decent parallels to the discussion. I can't see myself being able to conduct business as a full scale manufacturer, or establish scientific theories; yet their routes make perfect sense. Smooth flat roads, steep hills, landslides, deep canyons. And a permanent place in history.
Now, to update whomever is following along (and re-jangle friend Mr. C-Bag in particular; Willie Dixon. Bo Diddley. Chuck Berry. Bob Dylan). The musicians he mentioned fueled the 1960's ''British Invasion'' that we gobbled up. Musicians we were basically ignorant of, until creative foreign minds covered originals and fed us what we'd never heard before. Well, never heard cause we weren't listening. Diagrammed in another way, as to merely see doesn't equal observation.