Clearly, this is wrong. The exchange of a product against a sum of money establishes their strict identity in value terms. Within every transaction, supply and demand become necessarily the two sides of the same coin. As a matter of fact, supply and demand become completely interchangeable. They are the two aspects of the same phenomenon: a sum of money units is supplied by the buyer and demanded by the seller, and a product is supplied by the seller and demanded by the buyer. Therefore, go back to the last question.