When a chart counts, the city can finally read itself.
Two winters in the Floridsdorf clinic ledgers convinced our team to throw out the percentage and go back to one figure equals one thousand people — the Vienna rule from 1925, still the clearest tool we have.
The clinic on Brünner Straße opens at six. The first thirty minutes are not medicine, they are arithmetic — a nurse with a wooden tray counts inoculation cards from the night shift and stacks them in piles of ten. Anyone who walks past the counter can read the night at a glance: four stacks short, two stacks long, the cough ward emptied early. The chart is the desk.
That image is what we have been chasing across the housing and labor surveys for almost a year. Percentages, despite their precision, lie to readers who never trained on them. A nine-point rise in pediatric vaccination across the eleventh district reads as small. Eleven thousand additional children does not.
Section II — Counting, not stretching.
The hard rule, kept from the 1939 plates: never resize a single icon to imply magnitude. A bigger figure is not a clearer one — it is a louder one, which is the opposite. Repeat the icon. Let the reader count the row if she wants to. Let her stop counting when she has the gist.
One figure = 1,000 children. Red = inoculated by 31 Dec. Faint = remaining catchment, mapped from the school register.
The clinic posted the figure above the duty desk on the second of January. By the eleventh, two volunteers had walked the empty rows, knocked on six hundred doors, and brought the count to fourteen — a number every nurse on shift could repeat without the cards in her hand. The chart did the recruiting, quietly.