SpaceX wants to launch a million satellites. Here's how that could impact the atmosphere and the night sky
他还骂海湾这些国王都是“美帝国主义的走狗”，号召穆斯林推翻他们。
。新收录的资料对此有专业解读
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Speculative execution did not appear overnight. It emerged gradually from techniques that loosened strict sequential execution. In 1967, Robert Tomasulo’s work on the IBM System/360 Model 91 introduced dynamic scheduling and register renaming, allowing instructions to execute out of order without violating program semantics. Around the same time, James Thornton’s scoreboard in the CDC 6600 kept pipelines active in the presence of hazards. These mechanisms did not speculate—but they removed structural barriers that once forced processors to stall. Once out-of-order execution became viable, speculation became irresistible.