What is your dream? This question, put recently to a group of high school students, needed to be clarified. What did the teacher mean by “your dream”? Did the teacher mean what images popped into the students’ heads when they slept, or was the sought-after answer a far more difficult question of what it was that the students hoped to achieve in their lives? What the teacher wanted doesn’t matter now, but it certainly makes one wonder why it is that the word dream can have such disparate meanings.