Over The Hill said:You brain is rather important to you. It is only wrapped in a thin shell of bone rather like an egg shell. You put eggs in a box to bring them home.
Really? If your skull is no better developed than an eggshell I'd suggest a trip to the doctors. Mine has been developed over thousands of years to deal with the majority of knocks and bumps and is fairly sturdy. Even if it wasn't I wouldn't put too much trust in a second covering of eggshell (helmet).