Well if you want accuracy, xen's example is also an approximation. Over a very long period of time the approximation improves. Just like for rivers.
I thought it was fecking interesting anyway :-(
"I was being facetious..."
Is that what the :Y ("pipe" emoticon) is supposed to indicate? As an aside, before enlarging it enough to see the smoking, I thought "pipe" referred to being bashed upside the head with one. :P
"And they're not in the canine family..."
Fair enough. I had always thought they belonged because of the canine incisors. But a quick check indicates otherwise.
"Am I a canine?!"
I don't know. Are you a ferret?
"I don't think so".
Well then, unless you're a dog, probably not.
Then again, it's said that on the internet you could be talking to a dog and not know it.
Woof!