A perpetual motion machine operates in a continual repetitive motion, indefinitely; without someone providing an energy source. Considering this concept, imagine a business operating with little to no ...

The internal model principle of control theory states that algorithms designed to perfectly reject input signals must contain a model of that input. Feedback control that adheres to this internal ...

Perhaps the most persistent nonsense in physics: the perpetual motion machine. Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the ...