To Quote you:

"The rest of the input energy is from the environment."

You are completely and TOTALLY minimizing as "FLY POWER" to exert the initial force.

OK, so his finger tapping may not be much energy, but what about:

His lungs that must breath to bring air to the lungs so he can put forth the energy required.

What about the 60 trillion cells in his body operating and creating the electrical juice that fires the brain to tap at the right time...

What about the energy consumed by the TOTAL HUMAN BODY he has that without, will sit there and not cause the motion to ever begin?

You are minimizing his energy required and defining it as 'fly power.'

This, to me, is a gross misjudgment of the true energy required to keep the motion in a perpetual state. When you add ALL his energy that enables him to sit there and poke poke poke....it is quite a lot.

And if you starve him of HIS energy, I can assure you, the mechanized device will cease as well.

Thanks