Golbalization and the information age. We live in a world where everything is changing so fast that it's becoming dizzy.

SHIFT= Change

SHIFT HAPPENS= This is a pun based on the common informal expression "sh*t happens", which you say when something bad happened and there's nothing you can do about it. So this title explains that all the changes they're going to tell us about are not exactly good things. They are bad things because the rhythm of change is speeding up so much that we just can't comfortably cope with it any more.