potsnpans said...
I told you why it doesn't matter if the healthy participants were exposed or not.
No potsnpans, you didn't. You said: "You're method includes all healthy participants in both groups and treats them as if they all had enough exposure to get sick (plus any other factors needed). "
By saying this you already assumed that only the participants "of your imagination" had exposure, the other thousands not. So i ask you again, how do you know that?