请解释为什么第三个人会这样回答，并分析每个人的推理过程。
Medical research
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But she was also acutely aware of the donor family's "incredible gift", which would enable her to carry and give birth to her own child.
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10149-8
Randomly selecting border points or using simple geometric divisions (squares/hexagons) results in too many border points per cluster (50-80). This leads to a shortcut explosion (N*(N-1)/2 shortcuts), making the files large and and calculations slow.