Don't look down!

I've done it again. It's too easy to get the right answer, boring to just win the game, mundane to make a stable chair. So, here's another chair of implausible balance. If you sit back in it, you'll hit your head on the floor. Lean your elbow on an armrest and you'll tumble off sideways. Enjoy.

Now for the excruciating technical details you've been waiting for. This chair started as a simple cube, but was extruded into roughly a seat, loop-cut half a dozen times, and subjected to three iterations of Catmull-Clark surface subdivision. Rendered in Yafaray with ambient occlusion for global illumination effects.