Societal norms change over time because of a variety of factors, including:

• Changes in technology and lifestyles: New technologies can change the way we live and work, which can lead to changes in our social norms. For example, the invention of the internet has made it possible for people to connect with each other from all over the world, which has led to changes in our ideas about privacy and social interaction.
• Changes in values and beliefs: Our values and beliefs are shaped by our experiences, education, and culture. As these things change, so too do our social norms. For example, the rise of feminism has led to changes in our ideas about gender roles and equality.
• Changes in demographics: The composition of a society can change over time, due to factors such as immigration, birth rates, and death rates. These changes can lead to changes in social norms, as different groups of people may have different values and beliefs. For example, the aging population in many developed countries is leading to changes in our ideas about retirement and elder care.
• Changes in the economy: The economy can also influence social norms. For example, during periods of economic hardship, people may be more likely to conform to traditional social norms in order to save money or find a job.
• Changes in the media: The media can play a role in shaping social norms. For example, television shows and movies can influence our ideas about what is considered acceptable or desirable behavior.
• Social movements: Social movements can also lead to changes in social norms. For example, the civil rights movement led to changes in our ideas about race and equality.

It is important to note that social norms are not static. They are constantly evolving and changing, as society itself changes. This can be a good thing, as it allows us to adapt to new challenges and opportunities. However, it can also be a challenge, as it can be difficult to keep up with the ever-changing landscape of social norms.