We can't be sure, but that shouldn't matter
In the midst of the ongoing abortion debate in the United States, more than a dozen college biology professors would not answer the question, “When do individual human lives begin?” One professor claimed that “any answer [to the question] is an opinion,” even though numerous medical professionals and biology textbooks have unequivocally claimed otherwise.
Basically, they don’t know if an unborn child is a person (even though it’s been proven they are), but they’re more than willing to take the chance that they’re not and kill them anyway.