What stuck with me concerning this issue was something I heard Tom Waits say about what it took to make a good song. He said that they should be like Swiss Army knives, that they can be pulled out and used for multiple situations and contain multiple purposes depending on the person. He wasn't the first guy, of course, Marcel Duchamp had this idea earlier with his
personal art coefficient.
Tying this over to interactive media is indeed a question of picking the right circumstances, but layering this over the complexity of guiding an interactive experience often causes an explosion of complexity in regards to getting your point across (independent of how abstract the idea or feeling is). Unless there little to no interest in conveying an exact idea, this is a problem. But then again, this has always been a problem.
I'm not discussing how to herd the minds of people who experience what you make, but selfish as it sounds I think we all have opinions and conclusions that we want people to also have. Or at least understand.