In a series of papers Colbeck and Renner (2011, 2015a, 2015b) claim to have shown that the quantum state provides a complete description for the prediction of future measurement outcomes. In this paper I argue that thus far no solid satisfactory proof has been presented to support this claim. Building on the earlier work of Leifer (2014), Landsman (2015) and Leegwater (2016), I present and prove two results that only partially support this claim. I then discuss the arguments by Colbeck, Renner and Leegwater concerning how these results are to generalize to the full claim. This argument turns out to hinge on the implicit use of an assumption concerning the way unitary evolution is to be represented in any possible completion of quantum mechanics. I argue that this assumption is unsatisfactory and that possible attempts to validate it based on measurement theory also do not succeed.

在一系列论文中，Colbeck and Renner（2011，2015a，2015b）声称已经证明了量子态为未来测量结果的预测提供了完整的描述。在本文中，我认为到目前为止，还没有可靠的令人满意的证据来支持这一主张。在Leifer（2014），Landsman（2015）和Leegwater（2016）的早期工作的基础上，我提出并证明了两个仅部分支持这一说法的结果。然后，我将讨论Colbeck，Renner和Leegwater关于如何将这些结果推广到全部主张的论点。该论证最终取决于隐式使用假设，该假设涉及在量子力学的任何可能完成中表示unit进化的方式。