“轻重”之学是一种动态思辨。它主张“物之所生，不若其所聚”，国家原有的资源禀赋固然重要，更重要的还是政府要相机制定有效的政策来对物资进行调节。为政者首先要保证政出一门，然后通过政令的徐急开阖来调节市场上的“轻重”关系，引导物资和人员的流动；也可以通过政府的激励举措或示范行为来引导民众的消费活动，张无为有、转虚为赢，调通民利，强化政策效果。“轻重”的调节没有一定之规，需要当政者随机而动、乘时变易，不断根据实际情况灵活调整措施，政策目标也并非一成不变，而是追求动态平衡，在变化中推动经济社会发展。
the concept was well-known in the computer industry. As IBM designed the 2984,
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The first line consists of an "action", @, and a device path under sysfs (i.e. normally at /sys/devices/pci…). The rest of the lines contain key-value pairs that depend on the individual drivers and subsystems in the kernel. udev is then expected to match this information with rules it knows about in order to set up the new device.