It's possible you are:
* Misremembering the source: There might be a different theorist or concept you're thinking of. Can you remember any other details about it?
* Misunderstanding the terminology: "Artificial harmony" is a broad term, and you might be thinking of a specific musical technique or theory.
To help me understand your question better, could you please:
* Provide more context: Where did you encounter this concept?
* Clarify the term "artificial harmony": Do you mean a specific type of chord progression, a musical technique, or a theoretical concept?
* Provide any additional information: For example, do you remember any keywords or examples related to the concept?
Once I have a better understanding of your question, I can provide a more accurate and helpful answer.