One advantage of using the pair programming development methodology is that

Pair programming is a practice where two developers work together at one workstation. One writes the code (driver) while the other reviews each line of code as it is written (observer or navigator).

Defect Reduction :

Immediate Review : The observer can catch defects as they are introduced.

Shared Knowledge : Two perspectives reduce the chance of oversight.

Collaboration : Encourages more thorough and thoughtful coding practices, reducing the number of defects.

Empirical Evidence : Studies have shown that pair programming can significantly reduce the number of defects compared to solo programming.