It might have been a single paragraph that was missing, or yet, even more subtle than that, a single letter, one out of three billion letters that was changed, that was altered, yet had profound effects in terms of how the brain functions and affects behavior.
可能是单一段落（基因片段）消失了， 也可能，更微妙地， 单独一个字母， 30亿字母中的一个， 被改变了，被替换了， 但仍能极大的影响 大脑的功能 以及患者的行为。