眼睛真的看不見
這一組就是核心畫面的字面版本：擋住的東西真的長在眼睛上。四個用法的差別在時間長短和說話的立場——一輩子、一整群人、幾秒鐘、還是拿自己開玩笑。
unable to see · noun · C1
The state of not being able to see with your eyes, either completely or almost completely.
失明
核心畫面
One way to picture it: the eyes are open but no light gets through. The world is still there — the table, the people, the traffic — it just isn't there for these eyes. Nearly every later meaning replays that one situation: something is present, but it never reaches the person.
眼睛好好地張著，光卻進不來。世界還在原地——桌子、人、路上的車全都在——只是對這雙眼睛而言不存在。blindness…更多收起
眼睛好好地張著，光卻進不來。世界還在原地——桌子、人、路上的車全都在——只是對這雙眼睛而言不存在。blindness 後來長出來的每一個意思，幾乎都在重複同一件事：東西明明就在那裡，卻沒有進到某個人的意識裡。差別只在擋住它的是眼睛、是心、是情緒，還是一個轉角。From the word’s history
Just blind + -ness: the state of not seeing, turned into a noun. Because the suffix only names a state, any kind of not-seeing can slot in — which is why 'blindness to danger' sounds as natural as a medical term.
payload 記的是 blind 加上 -ness，也就是「看不見」這個狀態被名詞化。這個構詞方式本身就說明了它的用法範圍：任何一種「看不見的狀態」都可以套進來，不管擋住的是眼睛還是別的東西——所以英語能自然地說 blindness to danger，就像說一種病一樣說一個人的心理狀態。
payload 提供的詞源說明（Middle English blyndnes < Old English blindnes = blind + -ness，Wiktionary 條目）
Five branches
心裡不肯看見
眼睛沒問題，擋住的是心。事情就攤在面前，這個人卻沒有把它收進來——有時是真的沒察覺，有時是察覺了卻決定不處理。核心畫面在這裡幾乎原封不動地搬過來，只是把「光進不來」換成「事實進不來」。
refusal to notice the truth · noun · C1
A complete failure to notice or accept something that is there, often because you do not want to see it.
視而不見
不經思考的盲目
這一組換了一個角度：不是看不見某件事，而是整個人在往前衝的時候根本沒在看。眼睛的功能被關掉了，剩下信念或情緒在開車——所以核心畫面裡「光進不來」變成「判斷力進不來」。
unquestioning devotion · noun · C1
The quality of having a strong feeling such as faith, trust, or loyalty without thinking about why — often used when the speaker does not agree with it.
盲目
視線被東西擋住
回到真的看不見，但這次問題不在眼睛，而在外面：牆、彎道、雲霧。人是好的，環境把光擋掉了——核心畫面反過來用，同樣成立。
a blind corner · noun · C1
The fact that you cannot see what is coming around a corner or bend in a road when you are driving or walking.
視線死角
無知的人帶無知的人
這一格自成一格，因為它不是一種狀態，而是一整幅場景：兩個都看不見的人，一個牽著另一個往前走。核心畫面在這裡被搬演成一個故事，重點不在誰失明，而在那個牽的動作有多危險。
the blind leading the blind · noun · C1
A situation where people who know little about what they are doing are guiding others who know nothing at all.
外行帶外行
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
blindnessnoun/ˈblaɪndnəs/
- 1
The condition of being blind; unable to see.
- DHPG […] is effective in fighting Cytomegalovirus (CMV), a common virus which, for PWAs, can cause CMV retinitis — a condition which can lead to blindness within weeks.
- 2
Want of intellectual or moral discernment; mental darkness; ignorance, heedlessness.
- A tormenting hunger shuddered through her and she wished she could put aside the power. Oh, to be as others were — blind in that safest of all blindnesses, living only the hypnoidal half-life into which birth-shock precipitated most humans.
- 3
obsoleteconcealment
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。