[kqr]

I don't think anyone is arguing that, though. Lots of things humans notice e.g. "we speculatively upped the virtual file system cache and now the service has worse throughput but better high nines response time" is not something you can really build an alert for, and neither is it something you really want an alert for -- but absolutely something that would show up on a dashboard you're intimate with.

In other words, people are not arguing replacing alerts with humans, but rather arguing that continuously looking at your metrics give you a mental model for how your system behaviour changes in response to changes in configuration, whether intentional or not.