workaround for irrelevant test failures; is this exit that we found actually an exit from the place we're looking at?
pyflakes: unused variable
I don't think we need this any more.
replace "conceptualize" with "contributeDescriptionsFrom".  Now everything *almost* works, except now we really want a cyclic path to come back in these results so that you can see the chair that you're sitting in when you look at the room that contains the chair.