Tentacle
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Lets say the bracket that holds the submirror wasn't rigid enough. That'd be a design flaw which would need a re-designed bracket. But maybe that re-designed bracket needs adjustment of the production line as well. (Different specialist tools and alignment checking procedure.)
Or, maybe it wasn't the bracket, but instead the mating of mirror to bracket wasn't sturdy/rigid enough. That would be a manufacturing flaw. Then you would have to change the procedure of application of glue/clips/tape, or change the bonding method alltogether. Again, that'd change your production line.
And to complicate matters, maybe you decide that, in order to solve a manufacuring problem, you are better off redesigning a part or parts. So either way, design or manufacturing flaw, it takes time and effort:
A) To discover what's wrong in the first place.
B) To overhaul part(s) and/or assembly procedure.
C) To do extensive testing because you'd definately not want to fu... erhh, foul up again.
D) To modify existing production lines, update service manuals, quality check procedures, etc.
So, while I see your point Jeff, it makes no practical difference. Ok, so a manufacturing flaw would be less of a loose-face than a design flaw, from a reputation point of view, but it takes resources to fix either of them.
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