Answer:
I personally think art can be what it is yeah sometimes you get inspired to do art and there's a story behind it but sometimes you just sit down and do it .When you might not see if something is about something someone else may see the meaning. Although visual are important it is really about how the artist and the interpreter feel about it .I believe this because beauty is in the eye of the beholder and saying this means everyone will see it differently
The answer to this question is entasis.
Entasis is a design principle in architecture where in a convex curve was applied to a surface which also serves a strength to the construction and it also gives an optical illusion to it. Egyptian pyramids use this design principle.