User blog comment:D. Cello/Animus Hardware code decyphered/@comment-200.160.66.105-20110628235036/@comment-4136895-20110711212259

@Strang3Happ3nings Mabye the scar they have is a marking to show they will have contact with the apple. So whatever event gave them that scar it marks them as an ancestor of Desmond, kind of like a "You are the Chosen One" moment.