Qubit sent back in time?

[stevebowers]

Back at the beginning of the project, Anders Sandberg wrote a few articles about such infinitesimal infringements upon normal causality. I think he was suggesting that such infringements are trivial and can have no significant effect, apart from making computation a bit faster. Here's the only one I can find at the moment.
https://orionsarm.com/eg-article/46f996a9b3122