Is it possible to fly faster than the speed of light?
Y: It is quite possible and there is a theoretical basis for this. The question is, is it needed? I think that is the most important question.
Z: It would be interesting to fly. Then they would say, look, this is the guy who fucked a Martian. Although, how lucky they might be to say, look, this guy was fucked by a Martian. These interstellar flights are dangerous.