Okay kiddo, let me explain what a higher order message means.
Imagine you have a friend named Jane, who wants to send a message to another friend named Tom. This would be a first order message because it is a direct message between two people.
But what if Jane wants to send a message to Tom that includes a message from another friend named Alex? This would be a higher order message because it includes a message within a message.
So, a higher order message is when a message includes another message inside of it. It's like a message-ception!
For example, if Jane says, "Tom, Alex told me to tell you that he can't make it to the party tonight," that is a higher order message because Jane is relaying a message from Alex to Tom within her own message.
Higher order messages are important because they allow complex information to be communicated efficiently. Just like how we can put many toys into a toy box to keep them organized, a higher order message can hold many messages within one message.
I hope that helps you understand what a higher order message is!