This whole thread explains where we are on the exponential growth trend line. We are essentially right on the exponential trend right now with an apparent acceleration the last six weeks. I think that each Bitcoin bubble will always end in 3-6 weeks of near vertical movement, which we haven't started yet. At this rate I would expect the last vertical push to start around $12k as I draw my lines. From there if we had 3-6 weeks of vertical push upwards I think we land on $30k per coin. This could be within 4 months.