Perpetual motion machines 02/01/16
One of the most common statements of crankery among pseudoscientists is that of Perpetual motion machines. A perpetual motion machine is a machine which can operate indefinitely with 100 percent energy efficiency, meaning that all of the energy that enters the system will leave the system in the same way. Perpetual motion machines are a glimpse at mankind’s quest for ultimate symmetry and utility in the universe. Perpetual motion machines are in complete violation of the second law of thermodynamics, as energy can only be debased through use and can never be fully preserved. Therefore, anytime you see something claim that they have made free energy, they haven’t.