Would have been interesting if the data were some kind of spectrum. Like if the neural network didn't just put a blanket label on every scary section of the book as 'fear,' but were instead able to rate out of 10 how intense the sentiment is. Then in the barcode, the color of corresponding 'fear' sections could be on a scale of gray to purple, and same for the other sentiments. A less emotional book like Moby Dick may be more desaturated or something