As said elsewhere in this posting: Nondeterministic Turing Machine has only bounded nondeterminism. That is, for a given input a Nondeterministic Turing Mach

As said elsewhere in this posting: Nondeterministic Turing Machine has only bounded nondeterminism. That is, for a given input a Nondeterministic Turing Machine can only explore the number of alternatives bounded by its input. Actors do not have the limitation.