Very cool seed! Thanks, I hadn't heard of these before, but have played with helicopter seeds (Maple/Sycamore) every chance I get. He (Taube) had obviously also studied birds with his cable driven warping for ailerons and elevators instead of hinges. The Alsomitra macrocarpa seeds may also be a precursor to the flying wing designs of the Horten 229 and Northrop YB/XB designs in WWII with the bat tail similar to the seeds.

You make a good point about Nature being a "Proof of Concept" for our technologies. The ideas of Sacred Geometry and symmetry stemmed from natural shapes and have been around for millennia. I always find it interesting though that Nature has a unique character to each living organism and even how nature shapes hardscapes uniquely with the underlying forms by rules that the sky knows.

Inspiring!