I made several diagrams for concepts, such as:
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The pieces of this medieval puzzle are starting to come together. But there are still some questions.
从使用特点来看，虽然目前高龄老人、农村老人使用AI比例仍较低，但基本遵循年龄段越大、高活用户占比越高的特点。
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10121-6