Life is an Open Book Test

The Husband is cooking today, and he is giving instruction to Elder Son as he goes.
The Husband is very thorough with details; for example, he explains why he never cuts fresh meat on a wooden cutting board preferring to use a plain dinner plate instead. 
Elder Son is attentive; he nods and expresses understanding in almost inaudible mm-hm's.

I am studying for classes at the kitchen table, but I can't help overhear the entire cooking lesson.

When the Husband pauses and Elder Son nods and grunts, I chime in, "There will be a test later."
The Husband remarks, "No.  I just want to explain why I do everything this way."
"I'm talking about real life.  That's your test," I say.  "Fortunately, it's all open book.  You can phone a friend."