https://atulvishw240.github.io/categories/book-notes/Recent content in Book-Notes on Atul's Bloghttps://atulvishw240.github.io/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3Ehttps://atulvishw240.github.io/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3EHugoenTue, 07 Apr 2026 09:18:25 +0530https://atulvishw240.github.io/posts/poodr1/Tue, 07 Apr 2026 09:18:25 +0530https://atulvishw240.github.io/posts/poodr1/<h2 id="the-problem-design-solves">The Problem Design Solves</h2> <p>Imagine you wrote an application, also imagine that once written this application need never change. In this case design does not matter.</p> <p>Unfortunately, something <em>will</em> change. Change is unavoidable. The application was a huge success but now everyone is asking for more features.</p> <blockquote> <p>It is this need for change that makes design matter.</p> </blockquote> <p>Applications that are easy to change are a pleasure to write and a joy to extend. Applications that resist change are just the opposite; every change is expensive and each makes the next cost more.</p>