Originally Posted by
Urthdigger
There's a psychological effect known as the "Bystander effect". Essentially, if you ask a group of people to help, chances are none of them will help and instead wait for someone else to. As the group becomes larger, this effect becomes more pronounced. As we see here though, the effect can even happen with as little as 2 individuals. This is why whenever I ask DPS to use a limit break, I will pick a specific party member and ask them by name to do so to cut out the diffusion of responsibility.