This is a fascinating question that was discussed in these articles.
Those sites are in increasing order of origin, I believe.
The gist I got is that asking a person this question leads to interesting and important insight at least about the “scientific” aspects of their background. Note that this means scientific in a general sense of thinking and learning, more so than as, say, a professional scientist.
Now I just need to answer the question myself. I'm not sure I have an answer yet. I'll see what I can come up with and report back here.