贝恩咨询预测，在温和情景下，未来AI推理基础设施支出可能下降30%-50%。这正是杰文斯悖论的反向演绎：通常情况下，资源使用效率的提升会增加总需求；但在AI领域，当算法优化的速度超过应用落地的速度时，效率提升反而先冲击了硬件供应商的定价权。
Transforms don't execute until the consumer pulls. There's no eager evaluation, no hidden buffering. Data flows on-demand from source, through transforms, to the consumer. If you stop iterating, processing stops.
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KP Snacks is proposing to close its manufacturing site for Tyrrells in Staffordshire, due to plans to discontinue its vegetable crisps.
Include test results (accuracy on random pairs)