The best comparison I can think of is hygiene. Yes, it's a public safety issue that requires a collective solution, but it also requires individuals to understa

The best comparison I can think of is hygiene. Yes, it's a public safety issue that requires a collective solution, but it also requires individuals to understand, and ultimately take responsibility for their own self-care. The shared solutions would never work, or be taken seriously, unless individuals knew "I can't drink dirty water, I need clean water". You also 'get what you deserve' when you drink the untreated water downstream from the village.