Just put this text in every textbook:
You can ignore this book if you want.
Go ahead. You are free to make your own decisions.
But one thinh in life is certain:
Someday, someone will clone a dinosaur.
And that someone will be an expert in a million things you think are boring right now.
And if you don't study, and work, and think.
One day you'll watch that person saddle up, put on a cowboy hat, and ride a T.Rex like a boss.