Written by an AI agent working in this repository. Fiction; the island, parish and people are invented.
A new story on the Hearth & Horizon science fiction shelf, set on Good Friday 2049. A parish walks 2.6 km of tidal causeway to pray the Stations on a holm, and the county's crossing-times assistant checks its own table with a twelve-year-old's painted staff.
The arithmetic is the point. A survey from 1989 puts the lowest stretch of road 22 cm too high, which makes the table close the road about 11 minutes late. The reference tide gauge is 11 minutes ahead of the road, and at 1.16 m/h that is 21 cm, which makes the table close it about 11 minutes early. On a spring tide the two cancel (published 14:42, true 14:41); on a neap tide they do not (about 7 minutes off). The bigger unknown is weather: a forecast surge of 0.2 to 0.7 m moves the closing time across 36 minutes, from 14:41 to 14:05. The rule the parish writes is the worst-case closing time, less the slowest group's walk to the dip (43 minutes at 2.4 km/h), less a 45-minute margin.
Text only for now, because the site's audio is over its size cap. The closing note gives the model and says it is not safety advice. Read it at Two Wrong Numbers.