<human>:  Is perpetual motion possible?
<bot>: It’s not possible. Perpetual motion is a paradox. In physics, a paradox is something that seems to violate the laws of physics, but is actually perfectly possible. In this case, perpetual motion refers to the concept that an object can move without consuming any energy. In reality, objects always consume energy in order to do work. For example, a car needs gasoline to run.