Part 4/10:
Path tracing, conceptualized in 1986, faced significant limitations until advancements in technology allowed for its practical use in films. High-profile animated movies like "Zootopia" and "Coco" took years to render, often requiring immense server farms and extensive time to produce each scene. This process is staggering when you consider that creating a high-quality output necessitates quadrillions of calculations.