From what I've heard about tone clusters, they sort of came about as continuations of the natural progression of more and more intervals to sound pleasant (or a

From what I've heard about tone clusters, they sort of came about as continuations of the natural progression of more and more intervals to sound pleasant (or at least acceptable) as time has gone by. Tone clusters are like predictions of what will sound acceptable in the future. The more we use certain intervals, the more we like hearing them. I suppose you can view that through two lenses: the intervals sound less dissonant, or our cutoff where we say that a dissonant interval is unacceptable has changed. Though tbh those seem like the same to me.