Public hearings are being held to discuss whether a new nuclear power plant should be built. An expert on nuclear plants testifies that modern safeguards make the plant secure from dangerous accidents. A local woman speaks and states that she knows nothing about nuclear power, but the idea of having a plant nearby frightens her and her children. 

Which of the two parties has the most immediate ability to change attitudes of the audience? 

Considering the sleeper effect, what will likely happen over time?