So I can take that as a, "Yes, in a 70 year time frame, the art style has evolved to some degree"?
This part of the answer, however, seems ill-informed. To be clear, I'm not debating with you that "anime" is usually recognizable, indicating that it must have something in common with itself. It has a marketed style that is recognized and copied the world over. But you go further, claiming that anime
never fails to conform to "large eyes/multiple reflective highlights/small noses and mouths/minimal lines."
A quick collection of pictures demonstrates (new set, all post-2000) that to be not the case (the last one, Gankutsuou,
needs to be seen in motion).
I'm not trying to trap you on a technicality. I'm happy to agree with you that most anime fall within a narrower margin than what I linked above. But I do contend that it is inaccurate to say that anime
cannot be exploratory in human design, and that similar examples can be made for narrative form, dialogue, and animation.
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And to catch up with the posters above, I agree with this. But capitalism doesn't favor experimentation in art, and that's that.