The Many-Worlds Interpretation (MWI) is a theory in physics which proposes that, rather than quantum-level events being resolved randomly as according to the Copenhagen Interpretation, the universe constantly divides into different versions or worlds. All physically possible worlds occur, though some outcomes are more likely than others, and therefore all possible histories exist. This paper explores some implications of this for history, especially concerning causation. Unlike counterfactuals, which concern different starting conditions, MWI concerns different outcomes of the same starting conditions. It is argued that analysis of causation needs to take into account the divergence of outcomes and the possibility that we inhabit a less probable world. Another implication of MWI is convergent history: for any given world there will be similar worlds which are the result of different pasts which are, however, more or less probable. MWI can assist in thinking about historical causation and indicates the importance of probabilistic causation.

多世界解释 ( MWI ) 是物理学中的一种理论，它提出，不是根据哥本哈根解释随机解决量子级事件，而是将宇宙不断划分为不同的版本或世界。所有物理上可能的世界都会发生，尽管有些结果比其他结果更有可能，因此所有可能的历史都存在。本文探讨了这对历史的一些影响，特别是关于因果关系。与关注不同起始条件的反事实不同，MWI关注相同起始条件的不同结果。有人认为，因果关系分析需要考虑结果的差异以及我们生活在一个不太可能的世界的可能性。的另一个含义MWI是收敛的历史：对于任何给定的世界，都会有相似的世界，它们是不同过去的结果，然而，或多或少是可能的。MWI可以帮助思考历史因果关系，并表明概率因果关系的重要性。