Define knowledge action effects

Docs/KnowledgeAndSkillFoundation.md

@@ -123,3 +123,48 @@ Weather awareness:
 
 Taxonomy rule: skills are not unlock gates for basic MVP survival actions. They
 modify risk, quality, speed, yield, readability, and confidence.
+
+## Knowledge Effects On Survival Actions
+
+Knowledge should change outcomes in ways the player can understand. It should
+not silently guarantee success or replace practical experience.
+
+Fewer mistakes:
+
+- Knowledge reduces obviously bad choices, such as placing fire near dry brush,
+  drinking unsafe water without treatment, building shelter in a drainage path,
+  ignoring nightfall, or using the wrong material for a recipe.
+- The MVP expression is warning text, safer default prompts, and clearer failed
+  action reasons.
+
+Safer attempts:
+
+- Knowledge lowers the chance that an attempt creates injury, sickness,
+  uncontrolled fire, wasted materials, or exposure.
+- The MVP expression is risk messaging and lower future failure modifiers once
+  the player has learned the relevant concept.
+
+Better yields:
+
+- Knowledge helps a character identify the useful part of a resource and avoid
+  damaging it during gathering, processing, or crafting.
+- The MVP expression is improved expected yield or reduced waste where a system
+  already has yield/waste hooks.
+
+Lower injury risk:
+
+- Knowledge teaches safe handling, body mechanics, weather caution, fire
+  distance, tool choice, first-aid urgency, and when to stop working.
+- The MVP expression is fewer avoidable injury checks and clearer warnings when
+  hunger, thirst, darkness, fatigue, or bad weather make work unsafe.
+
+More reliable outcomes:
+
+- Knowledge improves sequencing and condition checks before the action begins.
+- The MVP expression is fewer failed crafts, safer shelter placement, better
+  fire maintenance, better water decisions, and more useful feedback after poor
+  results.
+
+Action-effect rule: knowledge should usually adjust probabilities, quality,
+warnings, and explanation. It should only hard-block actions when the action
+would be nonsensical without a discovered concept or required tool.