Even though the scientific laws we have now won't allow perpetual motion, doesn't mean it can't be achieved. Laws can always be rewritten
Bull. The laws of the universe don't change on a whim, and can't be rewritten. You can argue that our understanding of those laws is incomplete, and you would certainly be correct in some cases. However, there are things that we have apodictic evidence for. Our understanding of those aren't going to be simply overturned.
The first and second laws of thermodynamics prevent a perpetual motion machine from being feasible. These laws specifically show that perpetual motion can not be achieved. If you think you know better, please publish it and win the Nobel.
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