> Why would you pose the question if you already biased against the answer? Why would you pose _this_ question if you are already biased against the answer? :)

> Why would you pose the question if you already biased against the answer? Why would you pose _this_ question if you are already biased against the answer? :) But to answer your question: 1. to question your own bias. You might get an answer you didn't expect that actually helps you gain new insight. 2. to inform the candidate that good reasons are needed to keep their style if they want to work for you. "I prefer my own style because I'm used to it" creates single points of failure, while "I prefer this style because of X" improves code quality.