One of the reasons the comparison is specious is that some exposures are voluntary, others aren’t. Australian academic Prof. Barry Brook said in the aftermath of the Fukushima disaster: “People don’t understand that they live in an environment that is awash with radiation and they make decisions every day which affect their radiation dose – they hop on an airplane or eat a banana or sit close to the TV.” True – but people choose to hop on an airplane or eat a banana or sit close to the TV, whereas radiation doses from nuclear plants and nuclear accidents are usually involuntary.