Why Some Codebases Are Hard to Understand: Cognitive Surface Area and the Hidden Cost of System Navigation
The article discusses the concept of cognitive surface area in software codebases and how it affects developers' ability to navigate and understand systems. It highlights the importance of strong cues, such as clear naming conventions and directory structures, in guiding developers during debugging. Systems with weak cues can lead to confusion and require more exploration, making them harder to understand.
- ▪Developers navigate code rather than reading it linearly, following cues to locate relevant behavior.
- ▪Cognitive surface area refers to how much of a system developers must mentally explore to understand or change behavior.
- ▪Strong cues in code structure help developers quickly eliminate irrelevant areas, while weak cues lead to confusion and increased exploration.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3800609) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Christie Cosky Posted on May 26 • Originally published at christiecosky.com Why Some Codebases Are Hard to Understand: Cognitive Surface Area and the Hidden Cost of System Navigation #architecture #maintainabilty #readability #softwareengineering Designing Code for Human Brains (5 Part Series) 1 Readability Is a Performance Constraint 2 Mystery Meat vs.
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