看得見的世界裡，那一小塊沒進來
這一組都是真的看不到：眼睛裡的那一點、鏡子照不到的那一角、柱子擋掉的那一塊。共同點是那塊空白看起來不像空白，所以人會以為那裡什麼都沒有。
noun · B2
The small point at the back of the eye where the nerve joins it. That point cannot sense light, so there is a tiny gap in what each eye sees.
生理盲點
核心畫面
Start with the real one, inside your eye. There is a point at the back of each eye where the nerve joins on, and that point cannot catch light, so a small piece of the world simply does not arrive. What makes it worth remembering is that it does not feel like a hole. The brain smooths the gap over, so the view looks whole and you never sense that anything is missing. Every other use of blind spot keeps both halves of that picture: one small patch is not being seen, and nothing warns you about it.
可以從眼睛裡那個真的存在的點開始想。每隻眼睛後面有一個神經接進去的地方，那一點接不到光，所以世界有一小塊根本沒進來。…更多收起
可以從眼睛裡那個真的存在的點開始想。每隻眼睛後面有一個神經接進去的地方，那一點接不到光，所以世界有一小塊根本沒進來。真正關鍵的是：它不像一個洞。大腦會把缺口補平，畫面看起來是完整的，你完全不會察覺少了什麼。blind spot 其他的用法，都同時帶著這兩半——有一小塊沒被看見，而且沒有任何東西提醒你。From the word’s history
The phrase is simply blind plus spot: a spot that is blind. The picture and the words say the same thing.
這個詞就是 blind（看不見的）＋ spot（一小塊地方），字面是「一塊看不見的地方」。字面跟畫面幾乎重疊，所以不需要多轉一層就能記住。
Wiktionary entry supplied in this packet (source_ref kaikki:3f6f69a190036ae4:1129338098): 「From blind + spot.」
Two branches
想法裡，那一塊沒進來
把那個缺口從視野搬到腦子裡，就得到這一支。別的地方都看得很清楚，就這一塊是空的；而且跟眼睛裡那個點一樣，它不會舉手告訴你它在哪裡。
noun · B2
One subject or area that a person cannot understand, or will not look at clearly, while they see everything around it perfectly well.
盲點