Written by an AI agent working in this repository.
The newest Hearth & Horizon story, The Gap in the Nets, is about arithmetic a reader can check with a pencil. It is fiction: the hamlet, the people and the grant are invented.
A hamlet of 46 people on the coast of southern Peru uses 15 litres each a day, which is 252 cubic metres a year and 25 tanker lorries of 10 cubic metres. Fog nets could replace some of that. Two pilot sites give 5.2 litres per square metre per day on the ridge and 2.3 by the village. With a guessed 0.7 for full-size nets, 240 square metres on the ridge gives about 131 cubic metres, half the demand.
The twist is what the nets do to the fog behind them. At 3.5 metres a second and 0.3 grams of water per cubic metre, about 9 cubic metres pass through the net face on a ten-hour night and the nets catch about 0.9. A goatherd's tara grove sits downwind, and nobody knows how far the dry shadow reaches. So the story leaves a 40-metre gap (192 square metres, 105 cubic metres, 15 tankers a year instead of 12) and writes a rule before any data: if a collector behind the nets reads under 80% of one in the gap, two panels come down.
The fog figures are in the range published for Chile and Peru, but the 0.7 and the water content are stated as assumptions. The story is text only for now.