Final answer:
A computer systems engineer should hire a painter instead of painting their own house due to their expertise in computer science.
Step-by-step explanation:
A computer systems engineer could paint their house, but it makes more sense for them to hire a painter to do it. This is because the engineer's skills and expertise lie in computer science, not painting. Their time would be better spent working on their job and utilizing their engineering skills, rather than spending time on a task that they are not as proficient in. Hiring a professional painter ensures that the house is painted well and saves the engineer valuable time and effort.