User blog comment:Master Sima Yi/Assassinews 03-03-'13 — Assassin's Creed IV: Black Flag trailer and screenshots/@comment-5019018-20130318233003/@comment-4829046-20130319073025

I thought of that implement in many games but I think its too much work to make that happen. You must keep in mind that they don't want it to be too complex for the average person.