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Measurement is not (necessarily) controlling - part 2

A little over a year ago, I posted a short reflection on the difference between measurement and control, here.  This month, two things have made me return to that blog.

The first was the discovery in a shop of a drinking water bottle with a simple measuring device built into the cap.  The cap could be clicked through four positions, and a window displayed, successively, one dot, two dots, three dots and four dots.  The selling line was that by clicking the cap after every time you emptied the bottle, you could count the number of times you drank a bottle of water.  Maybe the designer couldn't count to four?  Maybe the company didn't think that the system could be fooled - a clever child fooling her/his parent's urging to increase the child's water consumption?  I won't rush out to buy one of these bottles!

But in a more serious vein, I found this article by Anthony Vickers of City Science in Exeter.  The article describes using a smart meter and recording the elect…

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