I wish engines could give off actual thrust, meaning that they would blow air.

Evidence

This means that we cannot do many things, such as channeling thrust, or something like the Custer Channel Wing.

The maker of this plane realized that the lift the aircraft achieved was not by the velocity of the aircraft, but the velocity of the air. He used a concept that worked to rather get faster air to move across the control surfaces, rather than to get the plane to go fast. This allowed the plane to fly at 8mph, if conditions were right.