While that is technically true, look at the various abilies that elimate flanking, such as "all around sight". A monster that can look in all directions at the same time is not flankable. Why, if defender's perception is not an issue, is flanking defeated by how the defender sees?Hypersmurf said:Flanking, as defined in the Core Rules, has nothing to do with awareness on the part of the defender.
If you're making a melee attack, and a creature friendly to you and directly opposite threatens the same opponent, you and your ally are flanking that opponent.
He could be unconscious, and by the flanking rules as defined in the PHB, if your ally is in the right place, you get the +2 on your attack roll.
Whether the defender thinks you're dangerous or not is irrelevant to whether you can provide a flanking bonus. All that's important is "Are you in the right place?" and "Do you threaten that opponent?"
-Hyp.
I believe in the past we have talked about an invisible attacker and it providing flanking bonuses. Technically, the invisible attacker who doesn't even attack will provide flanking bonuses. In the abstraction of the game, this is counter-intuitive.