Except that all things don't seem to follow what the charts of 2013 suggest. Do note that back then, only a handful of players are in the game, with most of the volume and market movement coming from the big fishes and the Willy bot. Having a market this big with lots of players to dilute the market will be a different scenario, and would surely not replicate what happened in 2013. Also only recently have we blown the ATH on a parabolic rise, and it is highly improbable for the market to reverse the negative trend that easily without reaching the absolute bottom of the parabolic curve. There's still a lot of money left on that ATH that needs to be 'mixed' before the accumulation begins again. Methinks that 2018 will be a lot of false hopes and fake bounces, but certainly not another run to ATH.
I think it's not that improvable. Just news of an ETF will skyrocket bitcoin into ATH again in a matter of days, if not the single day, we may see a mega green candle of dimensions never fathomed before.
It's often forgotten how tiny bitcoin is. Just a small amount of serious capital and it starts hoovering at around $100k. Maths don't lie.