Correct me if I am wrong, but my basic understanding of how the Chronology Protection Conjecture (CPC) would work is that, as virtual particles created from the quantum fields of the vacuum would traverse a wormhole and arrive in the past, they would then travel back into the wormhole alongside their past self, doubling the amount of energy entering the wormhole, and this process would continue, ad infinitum, until there is so much radiation traversing the time machine that it is destroyed. However, this scenario does not make sense to me. I have thought of an objection to it. This is that, once the photon (for example) enters the wormhole and arrives in the past, what would compel it to join its past self in, once again, traversing the wormhole? To furnish an analogy, let's say a human builds a restaurant, and then, once finished, travels back in time through a wormhole to see their past self building the restaurant. However, there is nothing to compel them to assist their past self in building the restaurant, as their past self is already doing it. I feel that the same would apply to the radiation that is supposed to build up in this process and destroy the wormhole before it can be utilized as a time machine. In other words, I am saying that there is no reason to suppose that the virtual particle would necessarily join its past self in traversing the wormhole, and, thus, no reason to necessarily suppose that radiation would build up in the wormhole until it destroys it. Does anyone notice any glaring flaws or errors in my argument? If so, please point them out, so I can either account for them or, if my original hypothesis turns out to be unsalvageable, to admit I am wrong on this point and discard it, in the spirit of empirical scientific investigation. Thanks.