Respectfully, it is surprising to me that with your attention to semantics you missed the distinguishing point that I made.
Of course I take for granted that doubling of bitcoin price every 30 days is not something that can go on forever,
The market has already demonstrated that the January to March trendline was not sustainable - the crash from $266 fell right through it. One must have numerical blinders on not to recognize bitcoin prices cannot double every thirty days indefinitely.
Exponential bitcoin growth is happening now at perhaps 4-5x annually when measured according to the prominent lows of bitcoin prices at Mt.Gox 2011 to present.
What I actually said was that the notion is unsustainable. If bitcoin stops going up, then obviously the notion, i.e. belief that it will keep doublling upwards every 30 days, becomes less prevalent - right?
You've missed the point I tried to make. Then again, I have a habit of writing those huge walls of text in which my original point gets lost, so I'll try it again:
There is nothing "unsustainable" per se about the price doubling every 30 days. It is factually what happened for a brief amount of time. Then it stopped. Everyone who was cautious, realizing that such growth cannot possibly go on for long, sold shortly before the crash, and was rewarded.
But actually following the logic of the (unconditional) statement that doubling every 30 days is "unsustainable" would mean you would have sold long before April 10, and would have missed out on a lot of profit.
Point is: any growth, no matter how outlandish it seems, is appropriate for the time during which it occurs (what a delicious tautology). Adding a qualifiying statement, why it probably cannot occur longer than some duration X, for some reason Y, is informative. On the other hand, the unqualified statement "this growth is unsustainable" is similarly fallacious to concluding that nobody can win the lottery from the fact that each individual ticket holder is extremely unlikely to win the lottery.
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I am probably just ignorant of the pragmatics of the word "unsustainable". I blame vague, self-diagnosed "autism". Yeah, that should work.
