You keep saying "it's a reminder not a full instruction set." But what is the difference between a reminder and an instruction set? You're not responding to the main issue, which is that this "reminder" is incongruous with how the kid feels.
Would you take the same concerns about telling a child:
"When someone says something that makes you feel bad, remember the conversations we about how just because someone says something, it doesn't mean it is true. People will say things to try to hurt you, but they are just being mean and it isn't true. It reflects on them as a person, not you as a person. However, if someone physically hurts you, this is different."
In my mind, "sticks & stones" is the same thing, but shorter and more memorable.
>what is the difference between a reminder and an instruction set?
Completeness.
Question: How to find the direction of magnetic field induced by a current.
Reminder: Use the right hand rule
Instruction: Detail on how to use the right hand rule and what it means.
Your longer explanation would be much more meaningful to a child. Using your analogy, telling a child to "use the right hand rule" before you've explained (and they've internalized) the relationship between current and a magnetic field will not be helpful.
