When it comes to the idea of multi-tasking we can all logically agree from experience that it's impossible for our minds and bodies to even do consciously. Since when we try to perform "multitasking" our brains can only focus on one thing at its best.
But if I were to do something like talking to a friend while studying, no matter how much I try, I would never be able to perform well on both, the studies and the conversation simultaneously. I could try to take turns on one task at a time, but that's not really considered multi-tasking, just doing one after the other.
So I had this idea on biologically engineering the human mind and body to not only perform two tasks at once, but also visually focus on them that is just as effective as one person being able to focus. Also the questions aren't meant for things for things like combat or whatever. It's just mundane computer and paperwork tasks that are the focus. Now I already got an idea that the four arms obviously needed to multitask. But here are the questions:
Would the structure and size of the brain and skill need to even change a lot for the true multitasking to work?
If so, would there literally need to be two different personalities controlling these tasks sharing the same resources as their connected brain?
[Like one mind controlling one eye and a pair of arms like the other mind.]
If all this is possible, would the user be able to use all these biological resources to do one direct task at once?
[Like the will to connect the two personalities to one and split to two]
I actually was going to ask a question about eyesight, but I believe that having any more eyes won't really change much.
So now I gotten a few conclusions from a few answers. So I already got one conclusion, but for the duel mind one. I do want to ask a question on that.
When I mean be true multitasking. I mean their is no idle involvement with the automatic parts of the brain. Like Breathing, Digesting, walking, etc.
Cort's Answer stated that it's impossible to have the dual mind idea; because both brains can easily argue with another as well as the nature of neurological complexity of the body. So I decided to
So why not engineer a system in which both brains
(Which is the prime mind)
could agree to split into two temporarily minds to perform their separate tasks, and if a conflict occurs in a decision both arms or eyes needed to be used. The two minds automatically fuse to one again.
[Like a safety system if both brains disagree, they could automatically go back into one and agree on a choice.]
Another solution stated by ZioByte is to enhance the brian and set the tasks to simply being automatic without any actual conscious thinking involved. Like doing chores or walking, but to a more complex degree. An example is having the mind automatically write an analysis paper with the user's right hand while the actual conscious is just learning on how to draw human proportion, and maybe this could happen vice versa.
obviously either system is going to involve some sort of brain enhancement, so I may need to find ways on how the body could handle the extra weight of the head, but that should be done on a different question.
Hardcore science is preferred. Anything lower is acceptable.