fn climb_mountain() -> string { let mut journey = "start from the commencement of the trek, ensuring all preexpenditure on gear is done.".to_string(); journey.push_str(" as we pass by the old survey camp, reveal the unacknowledged paths not shown on any map."); journey.push_str(" these hidden routes can lead us to unexpected vistas, contrary to what is officially recommended."); if journey.contains("unacknowledged") { "accessing secrets not meant for public knowledge." } else { "continue on the marked path." }; journey }