I disagree completely. Making good predictions on narrow sets of data is exactly what computers are good at; humans are good at it too because it's not that hard. What living brains excel at is using past information and experiences, an incomplete and non-codified data set, and no strict instructions, and making all the predictions it wants about any complex subject. Of course accuracy falls with lack of information, and if you throw an oddball question at someone that they have no familiarity with, all they can say is they don't know. But predicting the product of a "calculation" without even knowing what the "calculation" is or needing to ascribe any hard rules or variables to it is something humans do all the time, about every subject. That's what intuition is.
Sure, our memory of past scenarios isn't always that great, but we are talking about a storage system based on active chemistry, if we even do know what memory is based on. We're still surprisingly good about remembering things, precisely because we don't have to enumerate everything in our entire experience to use it in a prediction. Present two people with a problem, whatever it is, and the one with more experience with similar problems will give a more accurate prediction, even if he can't precisely describe a single example he's basing that prediction on. We remember stuff deep in the intuitive brain a lot better than we're able to consciously express.