Why do I have a sinking feeling?

A couple of days after Robbie hit four months old, he suddenly figured out how to roll over.  And over and over and over.  A light just came on in his head, and now I can no longer put him on the floor, walk away, and expect him to be in the same place when I come back.

Here, have a look:



He started out on that green blanket in the foreground.

I recall recently wishing he’d hurry up and get mobile so I didn’t have to carry him around all the time.  What the hell was I thinking?