你有没有经历过：明明知道发生了什么，却怎么也组织不出语言来描述那段经历？不是不愿意说，是字面上"说不出来"。神经科学给了一个解释，冷峻而精准。
"We found a significant decrease in activation of Broca's area... This is the area in the left frontal lobe that is responsible for translating personal experiences into communicable language... when that part of the brain goes offline, people lose the capacity to put their experience into words."
"Trauma is not stored as a narrative with a beginning, a middle, and an end... It is encoded in isolated sensory imprints — images, sounds, physical sensations — that intrude in the present without context."
很多时候，我们对"说不清楚"的人会感到不耐烦，觉得对方在逃避或矫情。但如果语言中枢本身已经暂时下线，催促只会加深羞耻，什么都得不到。
真正的出口，往往不在"说出来"，而在先让身体感到安全——只有安全信号触达神经系统，布罗卡区才会重新上线，语言才会回来。