Dyson Sphere seem like what we would do based on our understanding of physics would do, and of course how else would you theorize such device? My theory is tha

Dyson Sphere seem like what we would do based on our understanding of physics would do, and of course how else would you theorize such device? My theory is that an advanced civilization would not need to brute force such methods and use novel physics to gather energy, fusion is a start but there has to be even more advanced methods.