Professor Murphy and DJ,
I agree with your hunch but what would be an explanation of Say’s law for a beginner that’s not too simplistic.
Below is what comes from Investopedia:
The Say’s law of markets is an economic rule that says that production is the source of demand. According to Say’s Law, when an individual produces a product or service, he or she gets paid for that work, and is then able to use that pay to demand other goods and services.
Is there anything in the above explanation that could be tweaked to help me understand it better?