Do you ever have those days where you just can't complete a task that requires much thinking?  Writing this post here is probably pushing it, but I just can't clearly think though anything today.  My head's in a cloud, my mind is elsewhere, and I'm stressed about everything that needs to be done.  It's one of those times when I wish I could just crawl into a hole and ignore the world for a good day or two.  Can anyone out there sympathise?