I see bitcoin stable at 15000usd before the year runs out 
What makes you think that Bitcoin would reach $15k within this year? If you look at the chart of Bitcoin you will see that it is struggling to break the resistance and it is almost a month before it could break another wall of resistance. Now, you do the math if Bitcoin would be able to reach the five-figure within this year?Well, technically, we don't know
Personally, I don't myself believe that we are following the 2017 patterns (if anything, it is more like 2015), but still. We didn't surge nonstop through 2017 to all time highs, and in April of that year we were trading in 2-3k range (which is 2 times lower than today's price, just in case). In the summer there were a couple of major corrections, while the real growth had started only in September. Then, within a little over a period of 3 months, we reached 20k. So it is definitely not about the math (or meth) as Bitcoin had been able to do just that and starting way lower
with the nature of cryptocurrency I wont really easily believe that it would head up on the same path on what we do experience before yet this market
will not most likely be manipulative just like fiat.It is way more different.