Again, I'm in no way pretending to eliminate any possible source of noise so that a tendency is a perfect mathematical line with zero variance. I said "volatility unbearable to allow full adoption", not absence of volatility. We can't say "USD haves a 2% volatility rate, BTC 50%, so since they both have volatility, bot are equally bad/god as units of account, no distinction, you can use either USD or BTC to set prices right now, won't note a difference". As for "inflationary or deflationary does not decrease or increase volatility", that's just not true, I can tell you from first hand experience in Argentina.