[rlpb]

> Bitcoins value fluctuates so fast that no one really knows how much something real costs in bitcoin on any given day.

True.

> ...even though Bitcoins are surprisingly valuable, as a currency it has very low velocity.

Is this part really true any more? Trades of something other than Bitcoin aren't denominated in Bitcoin. But the exchange rate, though variable, is available in realtime and companies like Coinbase take the short term fluctuation risk for traders. It's easy enough now for a seller to say "I will accept $X worth of Bitcoin" and a buyer to say "Sure, here's $X worth of Bitcoin" and for both sides to be happy. Bitcoin clients have UIs that work this way now too.