Eric, the big flaw in your chain theory above is the chain is attached to 2 fixed points. That does not occur in anchoring as the only fixed point is the anchor, the boat is free floating.
Edit: the link in psneeld's post above seems to vet out in my mind most of the observed observations I've made on the subject so far with great illustrations.
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Craig
It's easier to fool people than to convince them that they've been fooled - Mark Twain
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