A lion, an earthquake, a missing sock

Hi Reader, Last email, I mentioned I was going to talk about what a lion and a missing sock have in common: Your body can't tell them apart. Our bodies have an alarm system, and it's older than language. It was built to keep our ancestors alive long before there were soccer games, school mornings, or difficult colleagues. It scans for danger all day. When it senses a threat, it doesn't stop to assess. It acts. A lion in the grass, a screaming toddler on the kitchen floor, an earthquake, or a...