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雪泥

人生到处知何似,应似飞鸿踏雪泥:
泥上偶然留指爪,鸿飞那复计东西。老僧已死成新塔,坏壁无由见旧题。
往日崎岖还记否,路长人困蹇驴嘶。 – 苏轼 和子由渑池怀旧

image-20221118174507663{loading=lazy}

图:Gravity. Things go down if no one keeps them up. Source: https://github.com/scikit-learn/scikit-learn/issues/8588