No, not all actors have to learn how to cry on command, but it can be a valuable skill for many actors to have. The ability to cry on cue is often considered a useful tool in an actor's repertoire, especially in certain types of performances or roles that require emotional depth.
Actors undergo extensive training in various aspects of their craft, including emotional expression, but the methods for achieving tears on command can vary. Some actors may naturally be more emotionally sensitive or able to tap into their emotions easily, allowing them to cry spontaneously during a scene. Others may use personal memories or emotional triggers to evoke tears. Some actors also rely on physical techniques like blinking forcefully, yawning, or putting pressure on their tear ducts to stimulate tears.
However, it's important to note that crying on command is not a requirement for success in acting. Many great actors excel in their performances without needing to cry in scenes. Emotional authenticity and the ability to convey emotions convincingly are more essential aspects of acting. Additionally, some directors and acting coaches may prefer actors who can access emotions on a deeper level rather than merely relying on surface-level tear generation.
Ultimately, the effectiveness of crying on command will depend on the context of the scene, the director's vision, and the actor's overall ability to bring depth and authenticity to their performance.