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Human thought crawls at 10 bits per second, Caltech study finds
(www.techspot.com)
This is a most excellent place for technology news and articles.
I think what you really mean is brains are not numeric. It's the "digit" part that is objectionable, not the "binary" part, which as an adjective for "digit" just means a way of encoding a portion of a number.
But in the end it's a semantic argument that really doesn't have a lot to do with the thesis.