Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very different

These are not stories in the typical sense. Plot, character development, motivation, etc. aren't the main points here. Calvino takes certain astronomical ideas or theories and makes a story out of them. For instance, the big bang becomes a story about "people" all crammed together into one tiny point, who then explode outward into the universe, sometimes running into one another and discussing the old times. Some stories, such as "A Sign in Space," are so intellectual and devoid of physical action, that they are disappointing. Others, like "The Distance to the Moon," take a concept that is ludicruous and develop a good story out of it. These are not your regular stories--more like science fiction fairy tales. They are, I would guess, unlike anything you've read before and worth checking out.