I think that what Google is doing is along the same lines of what human brains do. Google is crunching a load of mainly textual data to create an accurate stat

I think that what Google is doing is along the same lines of what human brains do. Google is crunching a load of mainly textual data to create an accurate statistical model of context. Humans use a much smaller amount of text but use visual, audio, and touch sensory input to create context. Humans also have the ability to refine their mental model by doing experiments on the world, whereas Google, as an observer, has to just use what people create. This means that Google (or any AI) needs a lot, lot, lot more of data to train its accuracy, which is now possible due to the internet.