Which of the following is NOT a benefit of pair-programming?
a. Code takes 15% less time to write than with a solo programmer.
b. Programs have fewer bugs than if written by a single programmer.
c. Code solutions are more creative.
d. Bias in programs is reduced.
The correct answer and explanation is :
The correct answer is:
a. Code takes 15% less time to write than with a solo programmer.
Explanation:
Pair programming is a software development technique where two programmers work together on the same code, with one acting as the “driver” (who writes the code) and the other as the “navigator” (who reviews and suggests improvements to the code). While pair programming has several well-documented benefits, saving time is generally not one of them. Here’s why:
- Option a: “Code takes 15% less time to write than with a solo programmer.”
While it may seem intuitive that two people could finish tasks faster, research has shown that pair programming often does not lead to a significant reduction in development time. In fact, it can take longer due to the collaboration and constant discussion required. The main benefits of pair programming are in code quality, fewer bugs, and improved problem-solving, not speed. Time is often “spent” in collaboration, planning, and testing, which may not show an immediate reduction in time spent on the task compared to solo work. However, this time investment often results in a higher-quality end product. - Option b: “Programs have fewer bugs than if written by a single programmer.”
This is a well-documented benefit of pair programming. The second set of eyes often leads to the discovery and correction of bugs early, resulting in cleaner, more reliable code. - Option c: “Code solutions are more creative.”
Pair programming can stimulate creativity and innovative thinking. Having two people collaborating on a problem can lead to different approaches and more creative solutions. The constant brainstorming and feedback improve the overall quality and creativity of the solutions. - Option d: “Bias in programs is reduced.”
Pair programming helps reduce cognitive biases, as the second programmer can offer different perspectives and challenge assumptions. This can lead to more objective and balanced decisions in the coding process.
In conclusion, while pair programming provides several benefits, faster code writing is generally not one of them. The focus is more on quality, collaboration, and long-term efficiency rather than speed.