We argue that novel (highly nonclassical) quantum extremal surfaces (QESs) play a crucial role in reconstructing the black hole interior even for isolated, single-sided, non-evaporating black holes (i.e. with no auxiliary reservoir). Specifically, any code subspace where interior outgoing modes can be excited will have a QES in its maximally mixed state. We argue that as a result, reconstruction of interior outgoing modes is always exponentially complex. Our construction provides evidence in favor of a strong python’s lunch proposal: that nonminimal QESs are the exclusive source of exponential complexity in the holographic dictionary. We also comment on the relevance of these QESs to the geometrization of state dependence in the typicality arguments for firewalls.

中文翻译：

---

在意想不到的地方发现蟒蛇

我们认为，新颖（高度非经典）的量子极值表面 (QES) 在重建黑洞内部方面起着至关重要的作用，即使对于孤立的、单面的、非蒸发的黑洞（即没有辅助储层）也是如此。具体来说，可以激发内部传出模式的任何代码子空间都将具有处于最大混合状态的 QES。我们认为，因此，内部传出模式的重建总是呈指数级复杂。我们的构造提供了支持强大的 python 午餐建议的证据：非最小 QES 是全息字典中指数复杂性的唯一来源。我们还评论了这些 QES 与防火墙典型性论证中状态依赖几何化的相关性。