Here's why:
* Motion Pictures: The very name "cinema" comes from "cinematography," which literally means "writing with movement." The core essence of film is its ability to capture and project moving images, setting it apart from static visual mediums like photography or painting.
* Illusion of Reality: This movement creates a sense of reality, drawing the viewer into the world presented on screen. Even though it's a constructed image, the motion gives it a feeling of life and immediacy.
* Narrative Power: Movement allows for the creation of narratives, telling stories through a series of sequential images that unfold over time.
* Emotional Impact: Movement has a powerful impact on our emotions. It can evoke suspense, excitement, sadness, and a wide range of other feelings, making film a profoundly impactful medium.
While other properties like sound, editing, and color are crucial, the fundamental essence of film is its ability to capture and display motion.