Earlier quoted context omitted.
Gold and silver have industrial uses. Gold and silver are used in jewelry. Gold and silver have proven to be a store of value for thousands of years. Gold and silver are also, to a first approximation, truly anonymous. Not one of those four characteristics is true for Bitcoin, so saying it's "just like" gold and silver is a bit of a stretch. This doesn't mean Bitcoin is awful, as Krugman's trollish column is titled,…
I meant to say that Bitcoin - or something like it - will emerge to facilitate online transactions of the black market kind. Rightly so that Bitcoin doesn't inherently gain value from the black market, but I do believe the black market will use something to do online transactions (as shown by the Silk Road and others). Thus far, that currency has been Bitcoin. Gold and silver have industrial uses today. That may chan…
If you're right that Bitcoin is a major factor, then yep, that could be an effective price floor (at least until a better rival comes along). It would be interesting to learn how much of Bitcoin purchasing is due to black market transactions. My intuition says it's mostly speculation, but I'd be happy to be proven wrong.