The comparison breaks down when you remember that you can't copy-paste a chair. Or download one.<p>OH WAIT:
<a href="https://www.youtube.com/watch?v=hM4zV77cFhU" rel="nofollow">https://www.youtube.com/watch?v=hM4zV77cFhU</a><p>3D printing will bring a ton of disruption.
I like it as a concept, but I was hoping for some kind of ratcheting mechanism ... a little pin in a zig-zag groove so that the eighth time you stand up it releases and the legs fall off.