Originally Posted by rpenmanparker

Ignoring minor influences and concentrating only on wind it takes the same force to ride 18 mph into a 10 mph headwind as to ride 28 mph with no headwind. But to keep the same cadence at a slower speed you have to gear down. So as the guy who originally brought this up asked, you have same force, same cadence, different gears and also different power because same force but different velocity. He asked would you notice the differences. The answer is only the speed of scenery passing you by and sensation of speed. What are you arguing about?