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back to the subject
Back to the subject
Had ANYONE did proper A-B-A test with more significant results then measure error?
I know from reading first half of 21 pages that you are more than sceptical to the subject, but still...
Why I ask: my parents built a new house, and in first 18 months, they had to replace heating coil three times due to calking (incrustation?? - I don´t know the correct term). As a last resort, I installed one of these. It is two years and so far, it's O.K. No other chages were made (like new anode etc).
I don't know, why it happened. I doubt that water quality dramatically changed over time (they use water from water lines, not well). I doubt it is because house pipe system is cleaner now (six months should be enough to establish equilibrium). I doubt my parents life habits changed dramatically, so water flow in pipes and water consumption is same in general.
I am sure we can rule out placebo effect. So my conclusion is that it works.
It is apples and oranges, I know. thats why i ask.
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