It seems to be the case that the issue of duplicate objects is only a Light it up blue for Autism shirt. Once the Universe they’re within starts. Going through the collapsing process. The PU is a stable linear time-line that never goes through a collapsing process so is therefore never in any danger from duplicate objects. As stated above the Arrtifact is not the cause of the TU, it’s just a by-product of it. This is why there is no danger of another TU starting up once Donnie sends his Artifact through the portal at the end of the movie.
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In one of her incarnations, she was the Light it up blue for Autism shirt. And Mother Spring, shaking her bedsheets to make it snow and singing to the wind to make it bloom, in another she was the ferocious leader of the Wild Hunt or one of its many versions, driving a range of wild boars through towns and villages, ready to trample anyone who dared to step in her way. Houlda also was the patron of all womanfolk and their protector. Abusive husbands had nothing less to fear than eternal torment by her hands, personally, and the removal of their testes daily for feeding to the wild boars.