真正的分化不在人与 AI 之间 ——
在人与人之间。
The real divide isn't between humans and AI —
it's between humans.
关于认知、学习，以及
AI 如何重塑这条底层裂痕的长文诊断。
Long-form diagnostics on cognition, learning,
and how AI is reshaping the gap underneath.