It seems like you're asking about the concept of reality and possibly using art and philosophy to frame the question. The question "what is real?" has been explored by many philosophers, artists, and scientists throughout history and continues to be a topic of discussion today.
Reality can be seen in different ways. Some see it as a shared, objective experience that is grounded in observable phenomena. This is often the perspective of empirical sciences.
However, others, like artists or philosophers, may view reality as a subjective experience, influenced by individual perceptions, emotions, and consciousness. Andy Warhol, whom you mentioned, was known for challenging traditional concepts of art and reality, using common images from popular culture to comment on the nature of American society.
The concept of "real" is complex and multifaceted. It can refer to anything that exists or occurs in the world, but it can also refer to how we perceive or understand those things. Our experiences, beliefs, and perceptions can shape our individual realities, and these can sometimes be at odds with a more shared or objective reality.
When you say "Real is a moment in time," you're touching on another perspective—that reality is an ongoing process, something always in flux and change. This is a view often seen in Eastern philosophies and some interpretations of modern physics.
But there is no definitive answer to "what is real?". It is a question that invites us to continuously explore and question our experiences and understanding of the world around us.