I wrote a new blog post, about monitoring, and when averages are useful: http://brooker.co.za/blog/2017/12/28/mean.html …
Standing in my kitchen I can know the room, oven, kettle, fridge and freezer temperatures separately and easily. Variance is there, it's just been systemized and compartmentalized very successfully, and we know to measure each mean separately.
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Now if only we could regulate service behavior the way we can regulate temperature for appliances and homes. I suppose what you are saying is that in the computational/service world, we haven’t done the systemization/compartmentalization
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Yep! A lot of robust designs are very simple and low temperature at the outermost layers, and then increase in complexity and entropy towards their core. Problems often manifest as an inversion of those states.
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