Woa. Now, that's a "killer".
I confirm. I noticed about it, too. A number of times. That's the "problem" (so to speak) we have with our little kids and we're just incapable, seriously, to see coming each time: life and our own parental mistakes haven't had enough time to corrupt their naturally implacable logic, no matter what little data they have.
Our present adult world tends to make so many things too complicated, biased, flawed, and unjust, it's depressing. I don't think anyone can disagree with the stubborn facts, there.
So, when that happens, just bless the lesson they gave you and be happy (and proud :)
"Cyril" pronounced "see real". I code stuff.
"To study and not think is a waste. To think and not study is dangerous." -- Confucius