Nature dropped a bomb this week. Only 3.4% of AI researchers worry about existential risk. Take that doomers. Except the same 3,700-person survey says 39% worry about humans misusing AI. Nature picked the 3.4% for the headline. Here's how the chart was actually built. The question was open-ended. Researchers wrote what worried them in their own words. UCL then coded those free-text answers into 22 categories. Those 22 categories are not equally granular. Six categories describe humans…