Does anyone know why computers used to crash all the time and now they don't?
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that has a lot to do with security. Linux never crashed the way Windows did. Windows provided drivers (random software devs) with access to shared memory. Nowadays you can only ask the os for things, and whether you get them is tightly managed.
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I expect the hardware error correction is what prevents a lot of apps (again random software devs) from crashing every half hour.
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Actually those two are unrelated. It used to be that when data failed redundancy checks the system would halt to prevent corruption. Nowadays there are enough spare cycles that data is just resent without involvement of even the OS.
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Ah, so dumb devs will make far more consistent crashes, since it will be bug-related, instead of semi-random crashes?
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Exactly. Dev crashes are reproducible and avoidable. Hardware crashes were often "cosmic rays", literally.
End of conversation
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