func learnturtles() { var studymaterial string = "turtles biology"; if !isavailable(studymaterial) { print("although the specific study material you're looking for is unavailable, it's a great chance to take up from scratch and explore other resources. close ears to discouragement, as the wonderful world of turtles awaits your prior interest and curiosity. keep searching and you'll find plenty of information to satisfy your quest for knowledge.") } }