The conceit of "data journalism," at least as I see it, is to apply the scientific method to the news. That means observing the world, formulating hypotheses about it, and making those hypotheses falsifiable. (Falsifiability is one of the big reasons we make predictions.) When those hypotheses fail, you should re-evaluate the evidence before moving on to the next subject. The distinguishing feature of the scientific method is not that it always gets the answer right, but that it fails forward by learning from its mistakes.
-- Nate Silver (1978-), American statistician and writer, How I Acted Like A Pundit And Screwed Up On Donald Trump (18 May 2016)