Quoting DHH

That's the long-term magic of Ruby on Rails. The ability to draw a yield from investments made in mastering the basics for years if not decades to come. Making that first deposit towards those investments is what this book is all about. To put a stop to, or at least provide an alternative to, the constant churning and thrashing that has beset the world of web development.

-David Heinemeier Hansson

From: Ruby, Sam. "Agile Web Development with Rails 8." The Pragmatic Bookshelf, LLC.