> What slice of my mortality pie was radon before and after spending $5000? You'll never know. The same way people in the exclusion zone will never know if the

> What slice of my mortality pie was radon before and after spending $5000? You'll never know. The same way people in the exclusion zone will never know if their thyroid cancer was always destined to be or if it really was related to the Chernobyl meltdown. But spending (closer to $1000) to mitigate some risk from a known threat vector does seem thrifty.