What is the definition of Estimates Fear?

Estimates fear is like when a superhero says, "I've calculated the odds of your heart stopping before you reach the ground, but I don't know if they're accurate." It's like trying to predict whether a tornado will hit your neighborhood tomorrow while holding a penny straight up in mid-air.

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Here's an unsettling example: "The estimates fear that the next alien invasion will be as mundane as a Tuesday brunch, complete with bagels and pickles."