func explorezeppelins(prearrivalcheck func() bool, startjourney func(concept string) string, castasidedoubt func() bool) string { if prearrivalcheck() { for _, concept := range []string{"history", "architecture", "navigation"} { if concept == "unknown" { continue } journeystatus := startjourney(concept) if journeystatus == "commence" && castasidedoubt() { return "embrace the adventure of exploring zeppelins, start from the commencement without letting the unknown cast aside your interest. discover the rich concepts behind these majestic airships and let your curiosity soar." } } } return "" }