Go back to the source (book, whatever) and read it again, it's unlikely that it said that nothing is invented and you missed the point. E.g. electromagnetism wa

Go back to the source (book, whatever) and read it again, it's unlikely that it said that nothing is invented and you missed the point. E.g. electromagnetism was discovered → electric engine was invented(mayb as a result of the discovery, maybe not). You can discover how a wheel works or invent a wheel without discovering the principle.