Comment by mghackerlady

I think OS 9 (and that entire era of computer graphics design) had the perfect mix of form and function. I won't comment on it aesthetically as that is entirely subjective, but its use of shape and depth made things very human friendly. Buttons looked distinctly buttonable. The icon design was also great, they were skeuomorphic enough that you generally got the idea of what you were clicking but also flat enough that they weren't distracting