You can learn about various aspects of art, particularly street art and its cultural significance. Here are some key points:

1. Art Brut: The documentary discusses the concept of "Art Brut," a term coined by French artist Jean Dubuffet in the 1950s. It refers to art created outside the traditional art world, often by self-taught artists or those considered outsiders. This includes the works of individuals in psychiatric hospitals, prisoners, and mystics. The video highlights how these artists, like Pichai, create meaningful art that resonates with broader cultural themes.

2. Street Art in Bangkok: The documentary explores the vibrant street art scene in Bangkok, showcasing how graffiti has become a significant form of expression in the city. The artist Pichai, who is central to the narrative, uses his art to create cryptic messages and maps throughout the city, inviting viewers to engage with his work on a deeper level.

3. Cultural Impact: The video illustrates how some street artists gain cult status and break into popular culture, similar to musician and painter Daniel Johnston. This highlights the potential for street art to transcend its immediate environment and influence broader artistic movements.

4. Personal Journey: The filmmaker's quest to uncover the identity of the graffiti artist serves as a narrative device to explore the meaning behind the art. It emphasizes the connection between the artist's life experiences and the messages conveyed through their work.

5. Exhibition and Recognition: The documentary notes that Pichai's writings eventually gained recognition, leading to exhibitions in prominent art spaces like the Bangkok Art and Culture Centre (BACC), showcasing how street art can transition into the formal art world.

These elements combine to provide a rich understanding of how art, particularly street art, functions as a form of communication and cultural commentary.