All fair points about zero. Sorry, I acknowledge now I was overly influenced my metrics dashboards I use for alerting. I've seen people panic at a seeming ste

All fair points about zero. Sorry, I acknowledge now I was overly influenced my metrics dashboards I use for alerting. I've seen people panic at a seeming steep rise in error rate or increase in latency because the chart was not showing the full range (0 to 1 for rates, or 0 to 2x SLA for latency). I was only thinking of operational alerting dashboards.