The creation and destruction of harmonic and 'statistical' tensions is essential to the maintenance of compositional drama. Any composition (or improvisation) which remains consonant and 'regular' throughout is, for me, equivalent to watching a movie with only 'good guys' in it, or eating cottage cheese.
Frank ZappaIf you want to get together in any exclusive situation and have people love you, fine - but to hang all this desperate sociology on the idea of The Cloud-Guy who has The Big Book, who knows if you've been bad or good - and CARES about any of it - to hang it all on that, folks, is the chimpanzee part of the brain working.
Frank Zappa