There was a study done recently about just how predictable people's days are. Participants agreed to have their location tracked at all times through their cellphones and within a few weeks, researchers could predict their location 93% of the time. The most unpredictable subjects, those who labeled themselves without a regular routine, were predictable 83% of the time.
I found this study amazing, and yet unsurprising at the same time. I guess I always knew that I was boring and predictable, I just didn't realize everyone else was too.