Dave Jackson wrote:
Sikorsky to Build and Test X2 Technology Demonstrator Helicopter
http://www.sikorsky.com/details/0,30...TI2088,00.html

I never quite liked that coaxial ABC idea. Sort of like an airplane with
a high Skyhawk wing on one side of the fuselage, and a low Cherokee wing
on the other side.

As a "symmetry" guy, doesn't that bug you?