FUNCTIONS OF EARLY ART:
There are numerous interpretations to the cave paintings. I believe that the paintings were a form of ritual for the animals and the hunting seasons. One reason I believe this hypothesis is because the animals are all painted in groups, probably painted before each season.
I believe that there were more animals than people in the paintings because the paintings were done as a form of ritual for the animals and hunting season. There was no need to add lots of people to the paintings.
If my interpretation of the paintings is correct, the paintings tell us that the cave dwellers were spiritual. They didn't purposely create art like modern artists do. Also, they painted in a cave, not somewhere easily visible which indicates that their purpose wasn't to create art for everyone to see. Rather it was a way for them to ritualize the animals in hopes of a good hunting season. They were very artistic but I don't think creating art was their intentions.
They went through lots of difficulties painting in these caves. They were always in danger while in the caves. As the interactive video shows, there are some parts in the cave that get really narrow. Also, it must have been really dark in there. They were painting on rock which cannot be easy. They used several methods of painting, depending on the rock surface and color that they wanted.
One function of this art could be the one I already mentioned. That is, a form of ritual for the animals and hunting seasons. A second function could be a way they document past hunting successes. A third function could be them merely painting the animals they see around them.
COMMONALITIES IN FUNCTION:
Once again, if my interpretation is correct, common forms of modern art could be religious paintings. One image I used to see in my old neighborhood was a painting of the Virgin Mary. It was often painted on the business buildings. I am almost sure that the owners painted it so the wall wouldn't get tagged on. It definitely worked, you might see graffiti on the wall right next to the painting but never on the painting of the Virgin Mary. In both cases, the people created art. But they did so with other intentions in mind. The early humans did it to have a successful hunting season. The modern humans did it so they wouldn't have to continuously paint over the graffiti on their walls.
INTRODUCE US TO YOUR FAVORITE ART:
David, Oath of the Horatii, 1784
Paintings can serve an endless amount of functions. Depending on the time in which it is painted and on the painter and the message he is trying to convey. They can communicate anything they want. Also, paintings don't always present a message that the painter wants to make. Artists are often commissioned and paint whatever they are told to paint. The painting above is a history painting used to promote patriotism and sacrifice.
There is definitely a complete culture for what is known as "classical art". Though I do not think there is a complete culture in painting as a whole. There is such a variety in paintings that there are a lot of cultures within it. For the culture of classical art, most people probably attended college where they learned certain language to describe the paintings. They often travel to museums and art galleries where they learn more.
This art form benefits society because it provides us with history. It gives us an insight on how people felt during the time the painting was made. For example, the famous painting Scream by Edvard Munch gives us an insight on how people felt during imperialism and the age of anxiety. It can definitely have negative affects because it is a form of art that can be used to brain wash people. The art form by itself cannot be detrimental.
Edvard Munch, Scream, 1893