If you squeeze some grape juice into a jar and keep it a little warm, it'll turn into wine all by itself. The yeast that lives on grape skins is so irrepressible that it produces wine automatically. It may not be good wine, but it's wine nonetheless.
Because this process is so automatic, historians, botanists and other wine-minded experts agree that wine was the first alcoholic beverage discovered by prehistoric groups. They believe that the first wine was discovered, tasted, and then deliberately produced about 10,000 years ago.