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Hi Glen,
My talk of the polish quality has nothing to do with figure. The best analogy I can thnk of is looking through a window. The glass won't be optically flat - we know this & can see this, but it is nice and clear. Now take another window & take to it with fine emery paper. The figure on each is as poor as the other, but one is clear, the other dull and frosty. This is the difference I am talking about, and this does make a difference in imagining. You rather a highly polished lens or a frosty one? Scatter will affect your image quality.
Your argument on figure is valid. Never disputed that. I actually agree on the most part. I ask not to confuse figure with finish.
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