translation.en: We don't have all the facts. We don't actually even know what the tools will be, nor what to precisely look for in every case to be able to get there before the behavior emerges as different.
translation.zh: 我们还不淸楚所有病因，我们甚至 没有有效的检测仪器， 也不知道去检测什么， 能够在行为异常出现前阻止病变。