Introduction # The Ruby object model is the Ruby programming language’s backbone, and knowing it is critical for producing fast and maintainable code. Mastering the Ruby object model as a senior developer will not only help you create better code, but it will also allow you to write more expressive and elegant code, which will make your code simpler to understand and maintain in the long term. We will look at some of the more complex concepts in the Ruby object model in this blog article, such as the lookup route, singleton classes, and refinements.