When people reject established science, the costs ripple beyond individual choice. A person who refuses vaccination during an outbreak doesn't just risk their own health; they strain hospitals, drive up insurance premiums for others, and can trigger broader public health emergencies. Someone who dismisses climate science doesn't face the economic fallout alone, it distributes across communities through property losses, infrastructure damage, and economic disruption. The calculus that once seemed purely personal becomes collective. What's striking is the persistence of this pattern even as consequences become tangible. That direct experience with being wrong doesn't automatically correct belief the way we'd expect. People find ways to reinterpret outcomes, blame external factors, or double down on conviction rather than update their views. The question becomes less "why do people deny science?" and more "who bears the cost when they do?" In a connected economy and shared environment, the answer increasingly includes everyone.