I would hope most shitcoiners learned their lesson last cycle, maybe the 4 year cycle has something to do with 4 years of college? Maybe it requires 4 years to clear out all the people who got burned before they can sucker in a new class? 

 Everybody gotta touch the stove. 

Bitcoin teaches us to be humble or be humbled. Some of us are slow learners but there's no escaping this lesson.