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 * [Pat Cable](https://blog.threatstack.com/balancing-security-and-your-on-call-rotation-using-deputize) - Balancing Security and Your On-Call Rotation Using Deputize
 * [Brendan Gregg](https://twitter.com/tgraf__/status/855100288251961346/photo/1) - Awesome 60s perf analysis cheatsheet : Host Perf Analysis in 60s
 * [Jon Prall](http://jprall.typepad.com/blog/2010/10/85-operational-rules.html) - (2007) 85 Operations Rules to Live By
+* [John Allspaw](http://www.kitchensoap.com/2007/10/11/knowing-when-you-can-fail-is-mandatory/) - Knowing when you can fail is mandatory.
 
 ## Monitoring
 * [Rafael Eyng](http://codeheaven.io/monitoring-your-application-status-with-cabot/) - Monitoring Your Application Status With Cabot