![Meh](https://image.librarything.com/pics/litsy_webpics/icon_soso.png)
The story was a roller coaster in terms of really good and meh. Nothing bad, per se. I expected a missing mystery, as the cover mentioned, for their dad. I did not expect a story about a non-verbal child and happiness experiments. This was where my whole attention was focused. Learning about the uses on baseline happiness affecting how other things make someone happy. Then there‘s Eugene. I know Mia‘s telling the story, could barely stand her.