Good point. However, if that is indeed the case, then would the ethical issues surrounding the use of human cells in such a fashion be properly founded? I mean

Good point. However, if that is indeed the case, then would the ethical issues surrounding the use of human cells in such a fashion be properly founded? I mean, if you took primate or whale brain tissue and grew it to scale, I think you'd have similar results. Maybe even with rat neurons, who knows. Point being: the primary ethical issue ultimately may not be the underlying type of biological substrate, but how that substrate is grown, trained, and used. Semantics aside, any such experiments would undoubtedly be creepy as hell, regardless of tissue type. Definitely Frankenstein stuff.