Why is clarity and understandability of source code important for future work and support?

Clarity and understandability of the source code are critically important for the maintenance and development of a software product. When code is written clearly:

• New developers understand the logic faster and can make changes without errors.
• The likelihood of bugs due to misunderstandings decreases.
• Refactoring and adding new features become easier.
• Communication within the team improves, as the code serves as documentation.

For example, well-named variables, functions with a single responsibility, and comments where the logic is complex make the code accessible for reading and maintenance. Otherwise, maintenance can take much longer and lead to errors.