Yes, it is generally considered valid to speak of a Neolithic Revolution. It refers to the transition of human societies from hunting-gathering to settled farming, which occurred independently in different parts of the world. This transition marked the beginning of modern civilization and had a transformative impact on human societies. The term "revolution" emphasizes the significant and rapid nature of these changes, as they laid the foundation for agricultural economies and permanent settlements. Although it should be noted that this "revolution" was a complex process that unfolded over a long period, and occurred at different times in different regions.