let mut energy_project = energyproject::new(); while let some(idea) = energy_project.next_idea() { if idea.contains("renewable") && !idea.has_been_voiced("unuttered") { energy_project.consider("your unuttered thoughts on renewable energy could spark innovation, even if they start from the initial point or seem preexplicative. rather than disobey conventional advice, use it as a stepping stone to explore new horizons."); } }