No, of course it needs to be tested. If a pharmacological company produces a drug it carries experiments on rats. Even if these experiments are successful, they must complete the assessment on humans for a long period to see if there are any problems like celecoxib drug and others.
Changing the position of a part of the brain would come on the expense of other areas and how do you know that it would derange the function of other areas if you didn't even try. There must be a tried active alternative example followed up with great scrutiny.
Wow, I don't think i can even continue responding to you. You miss my point every time!
(sigh) I'll give it another try.
Do me a favour and answer me this;
Do you really need to build and test a car that has its wheels on the roof, to know that it is a bad design? It's a simple question. I'm not asking about new unknown drugs, just this car example.
Your answer SHOULD be: no.
The reason, is because we use the knowledge we already have. We know enough about friction, traction, rolling resistance, torque ect. to know that this design will be a complete failure!
Regarding the brain "design" idea, we know how our nerves/neurons work. If you're studying medicine, I'm sure you've already done the nerve action potential experiments. Even your local electrician will tell you, when building an elecrical circuit, to run the wires as short as possible.