Why is continuity important in films? what can filmmakers do to ensure continuity in their films?

Continuity is important because actors and actresses need to say and do the same things in different takes, and if there is a lack of consistency, it could possibly throw the scene off. They can take photographs of the entire set with the actors and actresses,

The period that marks the paleolithic era is between the 250,000 to 10,000 years.