let incognito_mode = || { let mut conversation = string::new(); let cast_aside = vec!["doubt", "fear"]; for challenge in cast_aside.iter() { conversation.push_str(&format!("time to cast aside {} and take up from scratch in athletics.", challenge)); } let preinductive_thoughts = vec!["strategy", "preparation"]; for thought in preinductive_thoughts.iter() { conversation.push_str(&format!(" incorporate {} into your training regimen incognito.", thought)); } return conversation; };