Still a few errors to remove. The mood modelling idea came from my book Digital Vs. Human…

Mood recognition machines are especially interesting in this context. On a prosaic level, an ability to read an individual’s mood could be used to test products or personalise advertising. But you could also use such technology to judge the mood of a group, a corporation, or even an entire nation. On the positive side, governments might use real-time mood monitoring to increase general happiness. On the negative side, they could be tempted to identify dissatisfaction or opposition in real-time. What if, for instance, digital cameras with mood-recognition software were used to identify towns where opposition politicians were popular — and targeted them for elimination?