How come Americans disagree so passionately over abortion? For starters, they can’t agree what abortion is.

The pro-abortion Guttmacher Institute recently published the results of a 2020 survey in which respondents assessed whether they consider different pregnancy outcomes to be abortion, not abortion, or “maybe [abortion], it depends.”

The results are baffling—but they also provide some clues about what pro-lifers need to do to win hearts and minds.