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Use "failsafe" in a sentence
"The problem is, this not only did not happen, but the results of John Locke losing faith caused Desmond to initiate the failsafe, which is itself a controlled meltdown creating yet another loop."
"There's also a password failsafe, which kinda defeats the whole purpose."
"The industry and the government did not anticipate this type of accident one in which all the "failsafe" mechanisms failed."