Bart Streumer makes an interesting case for an error theory in ethics—and for an error theory for normativity more generally, but I will focus on the more restricted target. I offer a reply on behalf of naturalists (reductionists, reductive realists) in ethics. My case for resistance will involve identifying a three-fold ambiguity in his use of the term ‘guarantee’. I conclude with some observations about the implications of theories of reference for moral/ethical terms for the debate.

中文翻译：

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自然主义和错误理论

Bart Streumer 为伦理学中的错误理论和更普遍的规范性错误理论提供了一个有趣的案例，但我将关注更受限制的目标。我代表伦理学中的自然主义者（还原论者、还原现实主义者）作出答复。我的抵抗案例将涉及确定他在使用“保证”一词时的三重歧义。最后，我对辩论中道德/伦理术语的参考理论的影响进行了一些观察。