I agree. If you graph performance (or quality) and it's a horizontal line, you're doing it all wrong. It needs to go up and down but generally up. It means you'

I agree. If you graph performance (or quality) and it's a horizontal line, you're doing it all wrong. It needs to go up and down but generally up. It means you're trying things in order to improve. Sometimes you get it wrong but that's ok, as long as you fix it and get the trend going back up again. I never understand the bickering about just trying something. It makes no sense. Everyone agrees it's broke, so pick something to fix and do it and monitor the results.