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5 reasons why analysing barrier failures is better than 5-why

I hope you'll forgive me, but I don't really like 5-why. It's a decent methodology, but I think there are better options. Instead, we can use barrier-based incident analysis methods. Why is this better? Well, here are 5 reasons why I think analysing barrier failures is better than 5-why.

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The root cause fallacy

After an incident has occurred, most investigations will try to find the root cause on a system or management level. To find the underlying reasons for an incident, instead of focusing on the more superficial ones. An important reason for doing this is the assumption that by fixing a single