The lesson
Two-hour hike, six-hour walk. Everyone drank from the river. Everyone was sick for a week.
What this module forces
W1 is not about how much you carry. It's about the ratio between what you carry and what the trip could plausibly become.
The questions this module asks
What's the longest the trip could plausibly become? (Not average — plausible worst case.)
Do you carry water for that worst-case scenario?
Do you carry a filter or LifeStraw as an M1-adjacent item?
Do you know the resupply points, and their reliability?
The verdict
Green
Worst-case capacity + filter + verified resupply points.
Amber
Average-case capacity, filter present but never used.
Red
Consumption-planned capacity only. No treatment. No verified resupply.
Ready to run every module against your plan?
Open the Expedition Planner