Can We Stop with the Uptime Percentages?

I was reading Jason Gorman’s article “The Wall Confronting Reliable Coding Agent Autonomy” and he says:

the journey from 90% to 99% reliability is just as hard as it was to get to 90%. And from 99% to 99.9% is just as hard again.

This stood out, as I’ve been experiencing more and more “downtime” in my day-to-day work. GitHub’s down. CI’s down. AI’s down. Slack’s down. Downtime’s going mainstream! More and more I find myself visiting service status pages , where I’m confronted with a wall of colors and numbers like this:

100%? 99.72%? 99.09%? 98.98%? Those don’t all seem so different or bad? I mean, those are all an A in grade school.