[deeths]

By the obvious definition of "Stable" of "Not subject to sudden or extreme change or fluctuation," I don't understand how you can compare the stability of Bitcoin as in the same league as traditional currencies.

BitCoin's 1000% rise in 3 months would seem to put it well outside the traditional conception of stable. Keep in mind, since the benefit of currency stability is to protect both buyers/borrowers and sellers/lenders, a rise is as damaging to stability as a fall (just impacting a different segment of the transaction).

While there are a few examples of fiat currency experiencing hyperinflation, it's almost always been the result of extreme political uncertainty. In a normally functioning political environment, the change in currency value may still be significant, but tends to be fairly stable (even if it changes, it changes within a predictable range).

That's clearly not the case with bitcoin.