After a long time spent typing and editing this, this is what he sends
I'm sorry, but as a scientist I have to correct you say a few things.
The absence of light particles is not the only indication of temperature in a system. Radiation in space can make dark places-
Black holes, while dark, are the densest places of matter in the universe. And they aren't cold ei-
And there are organisms that live their whole lives buried in deep caves or in the darkest parts at the bottom of the ocean. Tardigrads can live in the vacuum of the coldest parts of space-
Simplistic metaphors for complex ideas are just unhelpful outside of therapy.
Just say that Practical life is complex and should just be taught and practiced in that way.