Give an argument for and against each of these propositions, about the possibility of a singularity, when computers will be more intelligent than people.

(a) The singularity will never occur as people have common sense that can never be matched by a computer.

(b) The singularity has already occurred; I would trust an answer that Google provides more than I would trust an answer from a random person.

(c) The singularity is meaningless as humans are so tightly integrated with computers that the interaction will always be more intelligent than either one.

(d) The singularity will happen in a few decades and will make humans subservient to computers.