Anyways, the thought of having four arms is a rather tricky sort of thing, because its such a foreign idea. I've been trying to imagine them the way that amputees often still can sense their missing limbs. However, even if I get somewhat close to actually tricking myself into believing that I have an extra set of arms, there is a gigantic problem with the concept of extra limbs. The problem is that I don't think that the human brain is equipped to be commanding of that many hands at once. I can't keep track of four hands at once in my head. There's a reason why people generally have a dominant hand/arm, and I think that it's because we aren't very good at utilizing all of our resources at once. I think that as the number of arms increases its likely that the usefulness of each new arm would significantly decrease.
I wish I could conduct a scientific study to look at all sorts of things concerning the effects of increasing the number of arms on a human, but unfortunately I can't just make people sprout extra arms. I think this is one of those questions that I'll have to ask Jesus if I ever get the chance to meet him.