Is not the alternative plot as faulted as the original plot, insofar as if the brainy computing substrate is used for something other than to run the originial software (humans) there is are no need to actually simulate a matrix?
Not only that, but I’m pretty sure building an interface that’d let you run arbitrary software on a human brain would be at least as hard and resource-intensive as building an artificial brain. We reach the useful limits of this kind of speculation pretty quickly, though; the films aren’t supposed to be hard sci-fi.
Is not the alternative plot as faulted as the original plot, insofar as if the brainy computing substrate is used for something other than to run the originial software (humans) there is are no need to actually simulate a matrix?
Not only that, but I’m pretty sure building an interface that’d let you run arbitrary software on a human brain would be at least as hard and resource-intensive as building an artificial brain. We reach the useful limits of this kind of speculation pretty quickly, though; the films aren’t supposed to be hard sci-fi.
You just need to stipulate that the brain can’t stay healthy enough to do that without running a person.
But I’m not much interested in retconning a parable into hard science.