Do we learn from children how not to be so competitive - how to be happy with our own gifts and achievements and not to be so obsessed with what the next person has? Well, consider the plight of poor Charlie Brown (in Peanuts), who is walking with his friends on the way to school one morning. It is "show and tell day," and Lucy is asking Linus if he remembered to bring anything for the class to see.

"Yes, I did," says Linus, as …