Recent research shows that humans started writing way earlier than we thought (the first known writing-system wasnt Sumerian cuneiform after all). A team of scientists found special cylinder-shaped objects that ancient book-keepers used about 6000 years ago
These clay tubes had unique marks that later became real writing: they showed pictures of wine-jars buildings and other stuff. Prof Silvia Ferrara from Bologna University explains how ancient people used these cylinders to track their trade deals - they just rolled them on clay tablets to make prints
The research focused on Uruk (an old-time mega-city that had like 40000 people living there and 80000 more nearby); it was the biggest city in the world back then. The place has some cool history: its where the famous Gilgamesh lived and its probably the same as biblical Erech city that Noahʼs great-grandson built
Scientists found that the marks on seals were actually connected to early writing symbols; these things helped people keep track of cloth and jar shipping between different places. The cool part is that temples were doing most of this trading business - using both seals and tablets to write stuff down
The whole thing shows how smart ancient people were: they made a big jump from just drawing pictures to actually writing things down. This research (published in Antiquity journal) helps scientists understand old symbols better; now they can decode more ancient texts and learn what all those seal pictures meant