Bitcoin's cycle of 4 years is one of the few (probably the only) Bitcoin parameter that can be used to predict future price action with some degree of success. The White Paper explains it nicely, it is a mathematical fact. Using it smartly can result in immense monetary gains (rinse-and-repeat, LFC_Bitcoin knows!). Yet, people keep ignoring it and doing their own thing (mindrustenings, daytardening, etc.). I guess it's like the elections... 4 years is just too long for the average brain to process...