Studies show that it’s better to be around positive people than negative people. Positive people uplift you, negative people bring you down. So let’s do this. Everyone wears an earplug that takes constant scans of your brain activity. The brain scans are matched against a database of ten thousand brain scans labeled “happy” or “sad,” and then use standard speech recognition techniques to classify the user brain scan as either “happy” or “sad.” NOW, on my Google Maps on my phone I can see shades all over the map. The brightest colors denote areas where the happiest people seem to be. The darker
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