text: When you ask someone about how to do your job, they may not know how to, but when you ask someone that has worked in your job for a long time, they would know, so their advice wouldn't be faulty. Even if you were to ask one person, there could still be faulty information, so you could get other information from different people that have done your job as well. The more people you have in a group, the better, one person may good at one thing, but someone else may be good in another.