04、从“它经济”到“我经济”在不确定的生活中，宠物给人类提供了一种稀缺的关系稳定性；对宠物好，其实也是在治愈那个长期承受压力、缺乏情绪出口的自己。因此，如今的宠物消费，更多是在给“我”的情绪价值买单。
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tasks = append(tasks, t)
Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.