Your biological brain has reached it's limit. You can't just stretch out your skull, scoup more brains in, and expect results. My advice is to find a surgeon, and have him connect some wires straight from your brain to a computer. Computers, not biology, is where the future of improved thought is at. No, I'm not kidding (Well, not completely kidding).
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Now Matti Mintz of Tel Aviv University in Israel and his colleagues have created a synthetic cerebellum which can receive sensory inputs from the brainstem - a region that acts as a conduit for neuronal information from the rest of the body. Their device can interpret these inputs, and send a signal to a different region of the brainstem that prompts motor neurons to execute the appropriate movement."..."To test the chip, they anaesthetised a rat and disabled its cerebellum before hooking up their synthetic version. They then tried to teach the anaesthetised animal a conditioned motor reflex - a blink - by combining an auditory tone with a puff of air on the eye, until the animal blinked on hearing the tone alone. They first tried this without the chip connected, and found the rat was unable to learn the motor reflex. But once the artificial cerebellum was connected, the rat behaved as a normal animal would, learning to connect the sound with the need to blink."http://www.newscient...true&print=trueI take no responsibility for your health if you actually manage to convince someone to do this to you.