Most chairs just aren’t comfortable. The key to making a chair more comfortable, I think has something to do with adding organic geometry that will conform to the users body – most chairs just have a bad shape and don’t even come close to trying to conform etc.
The idea I think would be to reduce pressure-points and add surface area contact etc. The addition of ‘foam’ and other soft compounds should consider these organic geometry conformations as well.
Meanwhile a well shape chair with no foam or padding indeed has the ability of still being more comfortable than most chairs that do have padding but aren’t shaped right etc.
I would need to find the other thread, and zero in on what the ‘original shape’ is.
It all depends on design intent.
here’s a revision I did as per:
chair_emod_v2.3dm (7.5 MB)
I think it fits closer to the original in some important areas. However there is some deviation in others, and with the new changes to the bottom, there’s some new deviation as well.
So, without further rules, I’m still just guessing.
green is original, orange is a revision.