I agree. if we consider that looking at the past cycle bitcoin did exactly 100 X (20,000$ , dec 2017) from the previous low (Jan 2015, approx 200$). This new low (december 15, 2018) was 3120 $, so if history repeats a high of 312,000$ towards the end of 2021 is certainly possible
@lucatoscani, When it reaches to 300K level, there will be a correction to 100K. And then it will do 100x in the next 4 years cycle to reach the highest point somewhere $1 million/btc. After that BTC will go side way for a very long long time because there's no more BTC that produce from miners.