Human musicians and composers can riff off a single rhythm or melody and produce something wonderful the very first time. Engineers can visualize a solution, implement it, and have it basically work, with only surface elements changing. Artists can have a vision of what they want to achieve in their minds and cast it out, bit by bit, ever remaining the work they intended it. Sure, each incorporate many patterns already learned and practiced and processed. But computers are a long, long way from even doing that. This is a very different type of creativity.