Who Are You?

I was watching Nova last night and heard an interesting question posed. The scenario is this.

You are sitting in an office with your child. In the office is a refrigerator containing 100 petridishes. Each petridish contains one live fertilized human cell.

A fire breaks out in the office. You must choose between carrying your child to safety or gathering up the 100 petridishes and taking them to safety.

Do you choose the life of your child or the lives of the 100 cells?

I am reminded of the lyric from a Who song. “Who are you? I really want to know.”