“We shape our tools and, thereafter, our tools shape us.” — John Culkin (1967)
“form follows function”—Louis Sullivan

Sullivan’s credo is still true, but maybe a new expression that is more in line with Digital Age is: function follows human needs, form follows human behavior.

As the situation of the philosophical thought experiment “If a tree falls in a forest and no one is around to hear it, does it make a sound?”, how should a tool exist when it’s unused? As the physical world, the body of the tool should exist, but how about the function?