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This week Google released its latest update to Google Now on Android, including a handy new homescreen widget and a bunch of new options that make the predictive search tool more tuned into your interests than ever. If you want to see the future of what big data and predictive analytics are going to be able to do, then Google Now offers an increasingly powerful glimpse. I first brushed into Google Now last fall when I was testing the Nexus 7 tablet, one of the first devices to get the Android 4.1 “Jelly Bean” release that debuted Google Now. On the Nexus 7, Google Now was either enabled by default or I turned it on accidentally, so I was surprised when all of the sudden it started sending me unprompted alerts about the weather and stocks and the status of packages I had...