The the comment of "The Biz of Life" I would add the impossibility to create bitcoins at will, like you can't also create gold or silver out of nothing, you're limited to the existed stock.
Such feature is a feature existing currencies lack. One may say «but it wouldn't be wise to create more USD because it will cause the devaluation of it, so the Fed won't do it». A small issue; there's a huge difference between «Can't» and «Wouldn't».
I can say someone that's unwise to jump off a cliff and probably he «shouldn't» do it; but isn't anything unseen, now and then somebody jumps off a cliff.
However I can say some he «can't» jump on a cliff because he have no wings. And in fact I never heard of someone to be able to jump from the ground to the top of a cliff. As we can't produce bitcoins at will, even if was or wasn't a wise thing to do.
For your article, seams well explained.