Quest: Future Perfect

[Rjain]

No they do not.

http://ffxiv.gamerescape.com/wiki/Categoryrake

Say that to all the drakes I slow walked by and they attacked me when they turned around and saw me.

Edit: For shits and giggles I'm going to take the next 10 mins just to log into the game and go do it again to make sure they did not change it.

Edit 2: You are right. Either I've encountered a "rare" glitch on many occasions or they changed it recently. At the time I first went to Mor Dhona, slow walking by drakes never worked. More recently last year, slow walking to Four Sisters didn't work if the drakes turned around. And, doing a coliseum faction leve, a drake aggro'd me while I was standing still. So, they detect by sound, but it's not guaranteed.

Edit 3: Someone told me that not all drakes aggro just by sound and that they too get aggro'd by sight often, so yeah.