Another lesson your company should have learned is that a safety-critical system...

		HeyLaughingBoy on Jan 30, 2014 \| parent \| context \| favorite \| on: Ask HN: What's the worst you've ever screwed up at... Another lesson your company should have learned is that a safety-critical system like this should not be left to software. Sure, monitor the curtain by software and send errors, but hardware should immediately stop the machine when the light curtain is broken.