What is the main impact of the three waves in the development of coffee products

Another argument about the main impact of the three waves of coffee product development is that in the mid-13th century there was a Muslim named Sheikh Omar who was suspected of having witchcraft and was exiled to the Mocha region of Yemen, a desert region. He was out of food and water. He happened to see a bird nibbling on the red fruit of coffee. He also went to taste it. It didn't taste very good.