What should be done in order to reduce the errors in the core?

To reduce errors in the core of a software system, a multi-faceted approach that encompasses best practices in software development, testing, and maintenance must be taken. Here are some key strategies:

1. Clear Requirements Specification: Ensure that all requirements are clearly defined and understood before beginning development. Ambiguities in requirements are a common source of error.

2. Adopt a Development Methodology: Use a structured development methodology, such as Agile, Scrum, or Waterfall, to provide a framework for managing the development process and minimize errors.

3. Code Review: Implement a code review process where other developers check new code for errors and adherence to coding standards. This catches issues early before they integrate into the main codebase.

4. Automated Testing: Utilize automated testing tools to conduct extensive testing on the software. This includes unit tests for individual components, integration tests for entire systems, and regression tests to ensure new changes haven’t introduced old bugs.

5. Continuous Integration (CI): Use CI tools to automatically test and build the software with every change, helping to identify and fix errors quickly.

6. Static and Dynamic Analysis Tools: Employ static analysis tools to examine the code for potential errors without running it, and dynamic analysis tools to analyze the running program to identify issues like memory leaks.

7. Performance Testing: Conduct performance tests to identify any bottlenecks or scalability issues that may not be obvious at lower levels of testing.

8. **Security