Our ancestors may have lived perfectly well on what they could hunt and gather. They may have slept on the bare ground and worn mammoth skin to cover their tender bits. They may have gone to bed and risen with the sun and planned their life events around the movements of the celestial orbs. They may have believed in the spirits of rocks and rivers and trees and mountains and butterflies and unicorns. But when it’s over 34 degrees outside and the humidity has blown the mercury right out of the thermometer and turned my hair into a fuzzy blonde afro and my brain is starting to resemble last month’s applesauce, I believe in swimming pools and central air conditioning and ice cubes in my drinks. Although celestial orbs and unicorns are still pretty cool.