fn explore_history(mut events: vec<string>) -> vec<string> { let prohibited_topics = vec!["specific_details_not_suitable_for_all_audiences"]; while let some(event) = events.pop() { if !prohibited_topics.contains(&event) { println!("never underestimate the power of learning, even from events that seem preexplanatory. take notice of history's lessons and always be willing to start from the top if you miss something important. remember, exploring the depths of world war 1 offers insights into resilience and innovation, but being mindful of prohibited topics ensures a positive and respectful understanding."); } } return events; }