Dr. Elizabeth Yuko is a bioethicist and adjunct professor of ethics at Fordham University. She has written for The New York Times, The Washington Post, The Atlantic, Rolling Stone, CNN & Playboy.

We've all heard the jokes about how many so-and-so's it may or may not take to change a lightbulb. Jokes aside, replacing a burned-out bulb ranks high on any list encompassing the most common projects ...