fn explore_psychology(variable: &str) -> string { let mut thoughts = vec::new(); thoughts.push("tune out negative emotions"); thoughts.push("set a new precedent for happiness"); thoughts.push("design blueprints for mental wellness strategies"); thoughts.push("restart with a clean slate whenever needed"); if variable == "forbidden" { thoughts.retain(|&x| x != "focus on forbidden thoughts"); } return thoughts.join(", "); }