Writing is a fascinating thing and although we usually don't think much about it, it is one of the major inventions of human communication. It allows us to communicate not over great distances in space – such as this article reaching you – but also to communicate over great distances of time. It enables us to transport information over several generations and in a far greater quantity than if all information had to be memorised and dilivered through oral tradition.
But writing isn't just one thing. There are several different alphabets – this text is written in the modern latin alphabet, but it is far from the only one in existence. In fact, it is not even the only system of writing.