Without the written word, humanity would not be able to communicate as it does. Everything currently existing relies on the written word.
The knowledge we have of the Ancient world relies on the written words and pictures of these ancient peoples. We would not be able to understand the pyramids or the half humans’ statues had the Ancients Egyptians not started the trend of writing on walls. Christians, Catholics, and Jews would not have the Old and New Testaments to learn about the Creation of the world to the Exodus from Egypt, and to the birth, crucifixion and resurrection of Jesus Christ.
Think for a moment of how much our world has been affected by the Romans or all the amazing people who lived during the enlightenment. How do we know what they did? The written word. Those people may have been invaders, scientists, philosophers, historians, inventers, but the one thing they all have in common is that they were all writers. They preserved history using the written word, and if we didn’t have the written word we wouldn’t know our own history.
Not only that, computers would be affected by the absence of the written word. They rely on simple words like “if” and “and” and short statements like “if then” to run. Those simple words would never be there if there was no such thing as the written word. Considering how attached the modern world is to the computer and to their phones (mini computers themselves) humanity as we know it would be completely different had there been no written word.
Anything from our history to the computer you are reading this on right now would be greatly affected without the written word. With that being said, the written word is the greatest and most important invention of all time.
I loved words. I love to sing them and speak them and even now, I must admit, I have fallen into the joy of writing them. ~Anne Rice