They're worried about people in the future who may not know about radioactive waste. This location will be dangerous for a very long time in a way that's invisi

They're worried about people in the future who may not know about radioactive waste. This location will be dangerous for a very long time in a way that's invisible. Carbon dioxide is certainly a concern, but most of its problems will never produce a place that people shouldn't stumble or explore because of unseeable danger. I often think of the story of the Goiânia accident to be applicable. Four people ended up dead because two people stole something they thought might have value but was radioactive.[1] It is prudent to assume that dangerous waste should be disposed of in a way that assumes there won't always be guards. 1. https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident