Changing the past by forgetting
arXiv:0902.3825
Abstract
Assuming the validity of the Many Worlds Interpretation (MWI) of quantum mechanics, we show that memory erasure can cause one to end up in a different sector of the multiverse where the contents of the erased memory is different.
This essay is featured in New Scientist magazine, http://www.newscientist.com/article/mg20227044.200-avoid-a-future-cataclysm-forget-the-past.html