This model uses simple arcs to match the highs and lows and project BTC explosive growth into the future. Naturally, now BTC has had it's "emergence" and as the market evolves, the magnitude of moves and the speed begin to reduce and slow down, respectively. This model assumes a linear increase in duration of bear market and Bull/Bear cycle to estimate the time for completion of the 2018-2019 bear cycle and the following bull cycle.
The BTC halving events have thus far shown to be triggers for a bullish trend so mapping out the third event seems logical. The weekly RSI shows significant peaks and troughs at parabolic moves (up and capitulations) so provides a further fit.