Before revision:  But at what level do measurements made by cellular systems map onto computational measurements made, for example, by magnetic devices ? Can cells reach the thermodynamic limit of minimal dissipation for a given measurement accuracy, and , if not, what is the cause?
After revision:  But at what level do measurements made by cellular systems map onto computational measurements made, for example, by magnetic devices ? Can cells be optimally efficient, and if not, what is the cause?