"It privileges fallacious arguments over scientific reasoning."
One can argue DNA away? Well, I suppose the chain-of-custody, potential forcontamination and bias of the lab facility and workers could be up for debate.
But generally, DNA is something that prevails and that juries understand.
Your alternative legal system would effectively do away with circumstantial evidence, sideline witness accounts, and ultimately empty the jails.
I don?t know what the solution is, but it?s current state is incompatible with reality. We could debate the merit of of having panels of qualified forensic scientists examining every murder case, or whatever, and I think witness accounts should be corroboratory unless absolutely necessary. Emptying jails or removing circumstantial evidence aren?t things I see happening under any alternative based on reality.