What I’m saying is this. You’re faced with various ways in which dust-based systems differ from ordinary ones (e.g., you can’t interact with them). Then you have two options: either say dust-based systems don’t perform computation; or say computation doesn’t require interaction. The difference between the two is solely in the definition of “computation”.
Discussing the appropriate definition of “computation” is a worthwhile discussion to have. But you have to be aware that you won’t get any more information out of this deliberation than you put into it.
What I’m saying is this. You’re faced with various ways in which dust-based systems differ from ordinary ones (e.g., you can’t interact with them). Then you have two options: either say dust-based systems don’t perform computation; or say computation doesn’t require interaction. The difference between the two is solely in the definition of “computation”.
Discussing the appropriate definition of “computation” is a worthwhile discussion to have. But you have to be aware that you won’t get any more information out of this deliberation than you put into it.