When the Greeks created a statue or painting of a real person, Greek artists created a "look" that somewhat resembled the person, but their appearance was improved, sometimes vastly improved. The artists gave men rippling muscles. They gave women long, flowing hair. Eyes and noses were spaced just right. The ancient Greeks loved beauty. Their love of beauty was reflected in their art. Be it a vase or a pillar or a statue, the ancient Greeks wanted their art to be visually interesting.
The Greeks were also great architects. It was the ancient Greeks who invented 3 types of columns that were so lovely that their designs are still used by artists today. These beautiful columns could be found all over ancient Greece, even in ancient Sparta. Greek columns held up buildings and rooftops and temples. The Doric column had a very simple design. The Ionic column was known for it's scrolls. The Corninthian column was very ornate.
The Greeks loved their beautiful columns. But they also wanted their columns to provided the support needed. To do this, they designed support pillars so from a distance they looked straight and graceful. But in reality, those pillars might lean this way or that way in order to provide better support.