<i>"Despite lacking one hemisphere, the girl has normal psychological function and is perfectly capable of living a normal and fulfilling life. She is witty, charming and intelligent." </i><p>I'm always impressed at how the brain can put so much function in such a small space on such low power. But it's this like <i>this</i> that really impress me: imagine a computer not only as powerful and efficient as the brain, but also which is so adaptive that you could <i>remove half of it during production</i> and it would still, when finished being produced, be capable of most of its normal function.