We know where it broke, but we can’t see why. Was it a race condition? Did a database read return stale data that has since been overwritten? To find the cause, we have to mentally reconstruct the state of the world as it existed milliseconds before the crash. Welcome to debugging hell.
据澳大利亚媒体核实，有视频显示了这场枪击案的最后恐怖瞬间：在不到6分钟的时间里，该区域内响起了103声枪响——其中既包括枪手开火的声音，也包括警方武器的射击声。
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"Now I'm asking, is that coming forwards towards us? Is it the end of the century?" he asked.
圖像來源，China News Service