What about the "check engine" light or the "low oil" light? Both are debugging indicators about the health of your engine. But snark aside, I do agree with yo

What about the "check engine" light or the "low oil" light? Both are debugging indicators about the health of your engine. But snark aside, I do agree with your about the intent of a dashboard. I've always told people dashboards are there to give you historical and real-time info about the performance and rates of your systems. It doesn't show you exactly what's wrong, but it is very helpful in showing where to start looking.