Originally Posted by Nagrom_

Wait a second here. Maybe you aren't as stupid as you sound. So if he were on never changing terrain with a bike geared exactly the same as a road bike that also weighed substantially less it would be more efficient?

NOBEL PRIZE IN PHYSICS. GIVE IT TO THE MAN.

Originally Posted by Nagrom_

clearly you need to realize that bikes aren't ridden in vacuums on rollers.

At some point, the OP will hit some kind of terrain, and all of the efficiency of not having gears is lost.