Appearance of ceramics:
Southeastern United States ca. 5000 BP
Northern South America ca. 6950 BP
Southeast Asia ca. 7950 BP
Mediterranean Europe ca. 8350 BP
It is generally accepted that a more sedentary lifestyle allowed more free time. At first pottery vessels were plain, but rapidly decorations came into being. These decorations were simple punctations, combing, and impressions (stamped with everyday objects). Soon came more complex designs involving more than one decorating instrument.
Why spend time and energy decorating an object that, during that time period, had a very short lifespan? Ownership/Signature? Aesthetics? Art?