Twowolves
Explorer
Which is why if you only get one shot at something (disable device for example), those with the best odds should try, aided by another if possible. If you get more than one try (like a search check) then everyone should get their separate rolls, because the more times you get to roll the dice, the better your odds at success.
What it boils down to here is simplicity: if conditions are favorable, you get +2 on your check. Aiding someone else should usually create a favorable condition, (thus a +2 bonus) or sometimes not (thus a simple check vs DC 10 to provide the bonus). Earlier you were complaining about special attacks being so complex, but here, aid another isn't complex enough for you, so you add in an "if-then" type of roll that doesn't really help very often, and never more than what could have been accomplished by having multiple characters try a task multiple times.
What it boils down to here is simplicity: if conditions are favorable, you get +2 on your check. Aiding someone else should usually create a favorable condition, (thus a +2 bonus) or sometimes not (thus a simple check vs DC 10 to provide the bonus). Earlier you were complaining about special attacks being so complex, but here, aid another isn't complex enough for you, so you add in an "if-then" type of roll that doesn't really help very often, and never more than what could have been accomplished by having multiple characters try a task multiple times.