In Which I Channel Billy Pilgrim

I do not feel that I am really here.
A flash occurs, and I am lost in space
Or time. So vividly another year
Dwells in my brain I'm not sure in what place
I'd find myself if I could know for sure.
In Boston I once lived and worked and walked,
And in the next-door universe I stayed.
Last night, in dreams, in Bethlehem I talked
With Donna; all this morning I have strayed
Back to that town where I have never been,
Then home to houses that I never bought
But looked at while I chose the one I'm in.
It's not that I'm unhappy where I am
But somehow all this day has seemed a sham.