Paradox is like a wind machine.
A wind machine uses more power than it generates but no one cares because the source of power is free (wind).
Paradox uses more power than it generates but no one cares because the source of the power is free (gravity).
Unlike a perpetual motion machine which claims to make more power than it uses (which voilates the laws of physics).
Again like a wind machine Paradox will run so long as the source continues to provide power.
The difference is the winds stops , gravity does not.