OE

Prognosticators are people who predict the future, and, according to the sentence, listening to them is a "problem" because no one holds them accountable for their predictions today. This idea is echoed in the idiomatic phrase "for every X there are Y," where X and Y contrast. So, for every "accurate prediction" there are "several others" that are not accurate. "Mistaken" and "untrue" fit this definition. A false or inaccurate prediction might be unintentionally "misleading," but describing a statement as "misleading" typically implies lack of clarity or deliberate deception; this goes too far, and "mistaken" and "untrue" pair better with each other than either does with "misleading." Both "unforeseen" and "surprising" mean unexpected, so these form an answer pair. However, the context is wrong: an inaccurate prediction might make the ultimate outcome unexpected, but this blank describes the other predictions themselves. A hurried, or "hasty," prediction might or might not turn out to be inaccurate, but there are no indications of prediction speed in the sentence.