you must see this
I wrote a lengthy diatribe on my opinion of the difference between knitting and crochet in the Interweave Knits blog a few years ago.
Nothing explains my theory better than this -- possibly the most beautiful crocheted object I've ever seen. It couldn't possibly be created any other way -- certainly not with knitting. I'm also heavily impressed by Mandy's crochet skills [she's Knitty's tech editor, you know]. This girl knows her way around a pattern, whatever direction it takes. That scarf is worthy of framing.