3b-isolations:
 (4b-isolations)
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I.O.U. — in Diagram 3b, the box for "Mental Experiment" has been expanded so it's now "Mental Experiment (using Model + Logic)";  later, maybe in August, these 3b-ISOLATIONS will be revised so they match the revised 3b.
 
3 Comparisons for Quality Checks (in the overall context of Design Process)