The Origins of Religion
When it comes to pattern detection, accuracy isn’t always the best thing. If you’re unsure whether that shape in the tall grass is a trick of light and shadow, or a lurking tiger, which side should you come down on? Overreacting to moving grass is likely to have less-worse consequences than ignoring a tiger, so we tend to see tigers where there aren’t any.
Why might it be important to have hypersensitive purpose-detection systems? My guess is that, in a social milieu where your interests don’t always match those of the schemers around you, it’s so important to be alert to the slightest sign of a plot that constantly jumping at shadows is an acceptable trade-off.