“Pop phys,” I assume, means popular physics. And as someone who encounters physics in her writing, I have to say, AG is onto a big, big problem here, the Explanations of Physicists. My late husband was a physicist, and his explanations to me went on for what seemed like hours and always ended with, “Your problem is, you don’t know any physics.” Which was true then and is true now. I know one or two physics, three max.
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https://abstrusegoose.com/601
Is there a finite number of physics? Jus askin.
Yes, Tim, there are many, many physics but not an infinite number of them.