What is Tai Chi?

I went to a screening of "The Professor", the Tai Chi film I wrote about here, and there was an appearance by Ed Young, one of the practice's most illustrious teachers. Young said, interestingly, that he used to be able to explain what Tai Chi is, but no longer can (it reminds me of the old line, usually misattributed to Oscar Wilde, that "I am not young enough to know everything").

I've been mulling it over for a couple of days, and came up with something:

Tai chi is the practice of embodying the natural flow one normally pretends not to be a part of.

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