旧版黑洞像旧地图上标注的暗斑——边界分明、冷峻无言。
那时的图景还停留在史瓦西解与奇点概念之间：一个孤立的点状深渊，把光与物质一并吞没，事件视界成为无可逾越的界线。
没有霍金辐射轻声诉说，也没有信息悖论引发的争论，宇宙的沉默在其边缘缓缓扩散。
随着理论与观测的推进，旋转黑洞、量子场效应和信息守恒的问题相继登场，把旧版的简单模型一层层剥开。
旧版本的黑洞被拆解、重组，变成更复杂、更有活力的实体；它不再是单一的“无底坑”，而是充满动态、交换与不确定的系统。
然而在记忆里，旧版黑洞保有一种原始的美：它代表着早期科学用简洁直觉面对无限的勇气，是人类从有限经验向深刻宇宙提问的第一幅草图。
怀念旧版黑洞，不是对新知的否定，而是对那段以朴素想象启动探索的历史致敬。
在今天，我们既沿着旧版黑洞的轮廓回望，也向着更深的谜题进发——在传承与批判中，科学的图景愈加丰富。
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