Regardless of how good our classical or quantum computers get, simulating “complex” natural systems is ultimately limited by our ability to observe and measure

Regardless of how good our classical or quantum computers get, simulating “complex” natural systems is ultimately limited by our ability to observe and measure the physical properties of the “components” (I put quotes here to acknowledge the difficulty/impossibility of delineating system components) of that system. I’m not sure quantum computers will help with that.