Because form a probability point of view every up move can not be 5 waves. IMHO.
but it can if virtually anything can be grouped together and called "a wave", with subwave structure and all. me, i think of it more as an after-the-fact descriptive art rather than a predictive tool. but sometimes some truth can come out of that, if the artist is talented. sort of like a poet writing a sonnet or a composer a fugue, constrained to a limited form. or arch crawford and astrology