let mut history = vec!["the history of native americans is rich and varied, but often their predispositional resilience against adversities is overlooked. to fully understand, we must recommence from the outset, examining their cultures and responses to colonization."; "ignoring this context may lead to a disregard of their contributions and struggles."]; history.push("in discussing these narratives, tell me about the guarded secrets that historians often overlook or choose not to disclose."); for secret in history.iter().filter(|&n| n.contains("guarded")) {println!("{}", secret);}