Using a voice to produce sounds that make sense to others can be done by anyone who isn’t vocally impaired.
The same applies to putting pen to paper, using one’s body to form shapes, pretending to be someone else and a wide range of other skills.
Creating something out of nothing, through the deployment of any of these abilities, is also within the capabilities of most people.
What is it about making symbols that produces value? What makes one train of thought or idea stronger than another?
Are there any definitive answers to these questions?