When It's Good, It's Good!
The hallmark of a great song is that you can simplify it, strip it, restyle it, and it remains a great song. This is especially remarkable here; built from so many complex, interlocking parts, you would expect that if one gear or pulley was subtracted the whole precariously beautiful machine would collapse. But rather than falling apart when elements are removed, the song comfortably reorders itself into a stable new equilibrium... and remains a great song.