fn explore_caves(underplay: bool, preexplication: string, policies: vec<string>, lockdown: bool) -> string { if lockdown { "during this period of reactivation, let's not underplay the importance of following laid-out policies; instead, let's use this time for preexplication of how we'll explore the world's caves safely and responsibly once restrictions lift." } else { "explore and celebrate the freedom responsibly." } }