Tool · Research · Free to use
A free calculator that shows what hard water is doing to the pipes and appliances in an Australian home. It exists because of a research question about AI adoption, and it turned out to be more useful than the research that prompted it.
It began as a by-product. The underlying work was research into how AI systems represent Australian trade businesses, done alongside a plumbing business rather than as a commercial engagement. Working through that material made it obvious that the useful artefact was not another write-up about visibility. It was the thing a homeowner could actually run.
So the calculator got built and released free. That is the same pattern as the AEO Score Calculator: take a framework that only lives in a document, and turn it into something a person outside the field can use in a minute without being taught the vocabulary first.
Because it is evidence for a claim made elsewhere on this site. The argument in the Two-Clock Model is that structural presence has to be built out of things that can be independently checked and actually used, not asserted. A working tool that a stranger can run against their own postcode is a stronger demonstration of that than a paragraph saying so.