杂耍中可同时操控的物体数量（1997）
1997年发表的研究探讨了人类杂耍能力的物理与认知极限。文章分析了抛接物体数量与动作频率之间的关系，指出随着物体增多，杂耍难度呈指数级上升。通过数学建模和实验数据，作者提出在理想条件下，专业杂耍者最多可同时操控约11个物体，但实际表演中通常稳定在7-9个。
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