The pattern detected in the timing for the new ATH is a mathematical logic which is relating various sets of data one to the other, while the number of years needed for the new ATH is proportional to many other factors. For example, the trend of 1 to 1.5 years may have been marked by the market Cap and other factors like new adoptions.  I see a pattern has frequent repetition of an element in a set of data as a response to the changing factors in the system in which the pattern is observed. Absolutely, there is a repeating pattern here with respect to the new ATH, but the timing will always depend on the factors that controls the pattern. And that is predictable if one is able to apply an algorithm that can consider majority of the factors in order to make a forecast. The pattern will still be correct when we have mass adoption and the price become stable, I mean when the speculation is gone and  bitcoin got the mass adoption.