Specifically, code other people have written is code you don&#x27;t have to write yourself. It&#x27;s based on the experience of mistakes other people have made. If you write it yourself, you also have to make the same mistakes yourself (or have already made them in the past).<p>If writing a framework is not a goal of the project, don&#x27;t write your own framework. And few projects have the clear goal of writing a new framework (especially in addition to any other goals like creating a product).