Odd Utility principle
Lessons from Proboscis Monkey
Use the strange tool.
River-Nose Swimming

Core lesson
Unusual features become perfect when the whole habitat uses them.
Biological basis
Proboscis Monkeys live near rivers and mangroves, with enlarged noses in males, partially webbed feet, swimming ability, and leaf-specialized digestion.
Best use cases
Where this lesson tends to be most useful in practice.
Odd utilityRiver lifeSpecial featuresSwimmingHabitat fit