In a world that is rapidly digitalizing, the internet is inundated with high-definition, fast-paced, and graphics-loaded video content aimed at explaining complex concepts. However, even in this era of sophisticated video creation, the charm of pre-internet-era explanatory videos remains undiminished. One such fascinating example is the humble, yet effective, video detailing the workings of a differential gear. In this simple, grey-shaded video, the mechanics of the differential gear are explained with an elegance and comprehensibility that rivals even the most flashy modern-day tutorials.