You haven't proven that your claim is true. Your assertions aren't facts. They're just your opinions. Carl Menger was the one who developed capital theory, and his later writings make it pretty clear that "capital" is the monetary value of productive assets, not the assets themselves. It's not an appeal to authority. It's an appeal to the basic definition of the word in the realm of economics, because Menger literally defined it. You are just using the word incorrectly.