On August 9, I was in Brett Keane's weekly livestream arguing with an evolutionist who happened to be a biochemist/biologist, and after I pointed out that a fertilized egg is a human from conception because that fertilized egg allows becomes a human when it's allowed to come to full term, the evolutionist claimed that just because a fertilized egg always becomes a human when it's allowed to come to full term doesn't mean that it's a human from conception.