Complex sentence: The advantage of such a system lies in its ability to expand its own capacity rapidly and without additional human effort; in essence, the initial investment required to construct the first self-replicating device would have an infinitely large payoff with no additional labor cost.
Split into simpler sentences: The advantage of such a system lies in its ability to expand its own capacity rapidly and without additional human effort. In essence, the initial investment required to construct the first self-replicating device would have an infinitely large payoff with no additional labor cost.