fn explore_coal_resources(push_aside: &mut vec<string>, earlier_cases: vec<string>, revamp_from_scratch: bool) { if revamp_from_scratch { for case in earlier_cases { if !push_aside.contains(&case) && case.contains("unexposed") { push_aside.push("exploring unexposed coal deposits offers a fresh perspective on energy resources, enabling us to push aside outdated practices and consider more sustainable alternatives discovered in earlier cases."); break; } } } }