[SIGCIS-Members] Virtuality versus transprency -- trying to locate a quote about the difference

David Hemmendinger hemmendd at union.edu
Thu Oct 30 07:24:15 PDT 2014

>I heard it from Mike Williams, when he had his professor of computer science hat on! Here's how he said it:
>If it is there, but you can't see it, it is transparent.
>If it isn't there, but you see it, it is virtual.
>If it is there, and you see it, it is real.
>For the purposes of symmetry, what if something is not there and you can't see it?

	If it isn't there and you can't see it, you're ok.


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