That is a great question. This is Eli Shupe, answering this in my capacity as project lead; I’m sure some of the students might have different perspectives, but they’re all cramming for their final exams at the moment…
I think the materiality of the model in some ways makes it harder to break the connection—the violinist is right there for you to look at, after all, and you have to physically sever the connection yourself, not just affirm it would be permissible to do so. I am not sure whether this changes anything for me personally, because I have never been very comfortable severing the connection, at least not in the version of the thought experiment where it’s only nine months’ confinement.
I wonder if having the model makes it easier to imagine the violinist but simultaneously harder to identify with the kidnap victim, who is now a representation in front of you that you are being asked to identify with, rather than your very own body. If one is very good at imagining things, and simulating scenarios from the first person perspective, then in some ways the activity set might decrease the immediacy of the dilemma.
My colleague Dr Charles Hermes tells me that experiencing the case with the models does change his intuitions—I will link him this dialogue and see if he’s willing to share more about that.