Making predictions is never wise especially if you live to see your predictions failing (remember Y2K?) , but looking at numbers there are evidences that some of these predictions will definitely come true. For example, demographic changes across the world are a certainty.
"Never prophesy, especially about the future." That nicely captures the perils of predictions - so nicely, indeed, that the saying or a version of it has been credited to numerous people, from the movie mogul Sam Goldwyn to baseball's Yogi Berra.