The “children” on the other side of the valley would have been very surprised, but welcoming. Decades would have passed without anyone to observe, talk or play. They would be happy to give chocolate to the prairie children and let them play with their toys. They would also have heard about the different types of toys the children from below would have, and would be more than happy to taste the meat they would have brought. Their valley would be too narrow to allow cattle to be raised, and all they would have would be goats and poultry. Only then would they realize how fed up they were with goat meat. They would propose to provide more chocolate if the prairie kids brought them more meat, and an agreement would be made cheerfully. But something strange would happen when the prairie kids asked for toys in exchange for even more meat. The kids on the mountain would not agree to trade their toys.
In fact, they would offer more chocolate in exchange for those toys of the prairie kids. They would all be bored with their respective toys, which they would have played with for years, but those toys were their toys. Toys are not born of other toys or grow in the fields or on trees. If they gave up their toys, everyone would know that they would be lost forever.
The prairie children would leave for their homeland full of chocolate, but no toys. At home, the other children who would have stayed behind would be very excited, but also envious. There would not be enough chocolate for everyone. And what about those new toys? They should see them. Another expedition would be organized, and then another. And another. They would always carry a lot of meat with them and return with lots of chocolate. But they would never take their toys with them, which were now essential. Before, they would never have realized how essential these toys were, but now they could not avoid the feeling that they were indeed! They would not be able to explain it, but for some reason, even if they did not feel like playing with their own toys, they would never abandon them. Especially not for the sake of those egotistical kids with all those cool toys they would not share.
After a while, the prairie children would learn to make chocolate and establish a trading scheme in which they would receive cocoa in exchange for livestock. They would also get cocoa seedlings and build greenhouses where they could grow them. Soon, they would learn how to make those great chocolate eggs, and the dreams would stop. The mountain kids, in turn, would raise cattle in large pens on the lower slopes of the valley and eat all the meat they could eat.
But no toy would exchange hands — they were their property.
And when both chocolate and beef became trivial, when there was no need for trade, when life became even better than before, and more stable, they would turn their attention once more to the toys they did not have.
And soon there would be war.