Provide a detailed summary of the following web content, including what type of content it is (e.g. news article, essay, technical report, blog post, product documentation, content marketing, etc). If the content looks like an error message, respond 'content unavailable'. If there is anything controversial please highlight the controversy. If there is something surprising, unique, or clever, please highlight that as well: Title: Quantum theory cannot consistently describe the use of itself Site: Submission history From: Renato Renner [ view email ] [v1] Mon, 25 Apr 2016 20:01:34 UTC (268 KB) [v2] Fri, 5 Oct 2018 17:59:19 UTC (2,115 KB)