Analogue equivilence .
Because we live in a proportionate dip in the universe we can test how equivalent our digital chips are to the full analogue system/computation that the digital uses of the analouge . The more we can maintain Turing completeness and at the same time get closer to the analogue equivalence the deeper our understanding of physics has to be to archive it.
Qbits
quantum computing is like searching a 10000 variables at once so far the level of disruption in the quantum aspect has proven to be an obstical to poerfoirmance. qbits which the quantum computer works with are spin chirality reprensatation so spinning left is 0 and spinning right is 1 and the qbit is seen as in a state of 1and0 but.
The problem is really the system is not in a state of 1 and 0 its spin state is merely undeterminable with current research techniques.