Human intelligence by computer?
When a man can understand how a woman thinks, then a computer can be programmed to perform that function.
Until then, the task is simply impossible!
How humans think, is obviously much more involved than the simple processing of input data.
That is why men and women are so different in how they process the exact same information.
Personally, I do not believe a computer can simulate the human mind to the point that it doesn't know it is not alive, i.e. to the point that it is alive. This goes to the underlying question which was never addressed by Darwin and is not addressed by biology to this day: What is Life?
However, that particular question has been and continues to be tackled by physicists. And some physicist/mathematicians - like Roger Penrose - have concluded that artificial intelligence can never simulate the human mind. His particular analysis is based on Godel's theorum and is addressed in a series of three books: Emperor's New Mind, Shadows of the Mind, and The Large, the Small and the Human Mind.
Essentially, the cut between those who believe it cannot be done and those who believe it can boils down to the ancient Plato v. Aristotle worldview.
IMHO, future research in consciousness will require either a new kind of physics or an expansion of the boundaries of "scientific materialism".
BTW, the subtext to the "What is Life?" question is "How did biological information emerge?" This particular question goes to the information content of DNA and therefore origins, either biogenesis or abiogenesis.
We live in very exciting times, Hunble!