Machines can create machines. Those machines can create more machines. We have essentially created machines that can self-replicate. This is a great milestone of humanity that was achieved during the Industrial Age. Do not worry about machines taking our jobs, because while they take jobs, they create new ones. Science is a job, however, that cannot be given to any machine, it is a job that only man and woman can take. Oh, and do not worry about machines taking over the world, because they have done so already, a very long time before mankind came about. We're the chemical machines that took over the world. But we don't have any mortal creators, God destined us to arrive, He set the universe up to inevitably result in our birth.