abstract:The importance of Plato for Martin Heidegger's interpretation of the history of metaphysics is now well known and documented. However, what is arguably his most radical interpretation of a Platonic dialogue, a 1930–31 seminar on the Parmenides, remains largely unknown and for two reasons. First, while Heidegger's notes were published in 2012 as part of the Gesamtausgabe (vol. 83), they are brief, cryptic, and cover barely half the seminar. We know this because a detailed and complete transcript is preserved in the Marcuse Archive in Frankfurt am Main, a transcript ignored by the editor of GA83 and not previously explored in significant detail. Second, Heidegger preserved a puzzling silence elsewhere about the seminar's findings (which undermine his narrative about the history of metaphysics). The present paper seeks to reconstruct the argument of the seminar both for its insight into the special role played by the 'third' hypothesis in the deductions of the second half of the Parmenides and for the light it sheds on Heidegger's unfinished Auseinandersetzung with Plato.

中文翻译：

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破碎的在场：海德格尔 1930-31 年柏拉图巴门尼德研讨会中的变化和时间

摘要：柏拉图对马丁·海德格尔对形而上学历史的解释的重要性现已广为人知并记录在案。然而，可以说是他对柏拉图对话最激进的解释，即 1930-31 年关于巴门尼德的研讨会，在很大程度上仍然未知，原因有两个。首先，尽管海德格尔的笔记于 2012 年作为 Gesamtausgabe（第 83 卷）的一部分出版，但它们简短、含糊，并且仅占研讨会的一半。我们之所以知道这一点，是因为美因河畔法兰克福的马尔库塞档案馆保存了一份详细而完整的抄本，GA83 的编辑忽略了这份抄本，之前也没有进行过详细的探索。其次，海德格尔在其他地方对研讨会的发现（这破坏了他对形而上学历史的叙述）保持了令人费解的沉默。