In his article "TTR: the out-of-control metric," Lorin Hochstein critiques the application of the Time-to-Resolve (TTR) metric in incident management. He argues that since incidents represent periods when systems are out of control, applying statistical analyses to TTR is ineffective and does not lead to meaningful improvements.

https://surfingcomplexity.blog/2024/11/23/ttr-the-out-of-control-metric/