I don't believe that learning is the same as “I am reading a book about building modern Java apps with GWT." or "It’s a 500-page-long Apache Tapestry book. Tape

I don't believe that learning is the same as “I am reading a book about building modern Java apps with GWT." or "It’s a 500-page-long Apache Tapestry book. Tapestry was a thing." I agree that the "fundamentals" are important, but if you don't apply knowledge to something practical it's really worth?