As you have spotted, indeed this can easily lead to a discussion on expectations, artificial limitations and of course silly wasteful dreams. It would encourage the people to understand that expectation is healthy and outrageous expectations can also be quite beneficial, but at the same time you need to be aware of not going a step too far. Going to moon was indeed a great suggestion/expectation but we all know that it led to another unrealistic expectation that by 2000 we will have Mars settlements, eat pills as food and fly our cars to work! A step too far.