What exactly do you mean by ‘serially’? Any parallel algorithm can be implemented on a serial computer. And we do have parallel computer architectures (multicore/multicpu/cluster) that we can use for speedups, but that’s purely an optimization issue.
Why do you think that intelligence can be implemented serially?
What exactly do you mean by ‘serially’? Any parallel algorithm can be implemented on a serial computer. And we do have parallel computer architectures (multicore/multicpu/cluster) that we can use for speedups, but that’s purely an optimization issue.