Earl you're speaking very strangely. Like you are not in agreement that glass (and all smooth materials) becomes 100% reflective when viewed at a grazing angle from the outside, and 100% reflective when viewed at a lot of angles from the inside.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)