ie. some journeys require imagination - one's that involve magic etc.
Some are inspiring esp Utopian style journeys
Speculation is a harder one, maybe it refers to the fact that we learn something from that particular journey. And how that particular journey broadens our understanding of the world
Consider the following and you may get a clearer understanding - our teacher gave them to us.
is there such as place as a perfect world? is there a place where all are equal and all get what they desire? Is 'true love' possible? How important is love and forgiveness?