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Each chapter follows another generation as humans colonize a planet. The primary idea is semiosis, as the humans and a native plant build a relationship. Each generation, and, in fact, each character is flattened to further emphasize a certain attribute or level in their development. For me, this took away a lot from the story. However, as a hundred years or so are covered along with many characters, I can see why the author made this choice. It simplifies the story in a way that likely increases accessibility to a wider range of readers. I also didn't like how very similar the plants' way of thinking matched the humans. I wanted real differences. Sure, there are references to biological differences, but the base thought patterns were the same. This was uplifted by a heavy sprinkling, especially further along in the book, of scientific references to chemicals the plants use for various processes.