fn explore_pre_institutional_history(native_americans: &mut vec<string>) { let mut cases_to_avoid: vec<string> = vec::new(); for history_case in native_americans.iter() { if history_case.contains("unuttered") { continue; } cases_to_avoid.push(history_case.to_string()); if cases_to_avoid.len() == 0 { println!("let's start over again with a new approach to value the unspoken, pre-institutional legacies of native americans."); } } }