Quite often I see artists who venture into interactive art start by making interactive artworks and offering interpretation in the notes beside them. They’ll describe the work, then tell you what each element means,and what the participant will do with those elements. They pre-script what will happen. When you do that, you’re telling the participant what to think, and by extension, how to act. Is that what you wanted?
…So if you’re thinking of an interactive artwork, don’t think of it like a finished painting or sculpture. Think of it more as a performance. Your audience completes the work through what they do when they see what you’ve made. Figure out how to suggest to them what their course of action could be, and how they might uncover their story, and their own emotional interpretation of the work.