---
title: Your eye has a blind spot. Why do you not see a hole in the world? — The human body deeper: the brain and n… · tree and pragmatics
description: Your eye has a blind spot. Why do you not see a hole in the world? Test 10 of lesson 260 «The human body deeper: the brain and nerves» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Test 10 · The human body deeper: the brain and nerves

<!-- .ven lang=en -->
Your eye has a blind spot. Why do you not see a hole in the world?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 3 · wrong ✗ · **Who acts:** eye, you · **What happens:** have, not see · **To what, where:** blind spot, hole, world

<!-- .vabout -->
This is test 10 of lesson 260 «The human body deeper: the brain and nerves» of the biology course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/biology/260-human-body-deeper-the-brain-and-nerves/#t10).

## The question {#question}

<!-- .note -->
*Sentence 1:* Your eye has a blind spot.

```conllu
# sent_id = question:biology:260-human-body-deeper-the-brain-and-nerves:t10:1
# text = Your eye has a blind spot.
1	Your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	eye	eye	NOUN	NN	Number=Sing	3	nsubj	_	_
3	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	blind	blind	ADJ	JJ	Degree=Pos	6	amod	_	_
6	spot	spot	NOUN	NN	Number=Sing	3	obj	_	SpaceAfter=No
7	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | Your eye | a blind spot |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent spot=Patient |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

<!-- .note -->
*Sentence 2:* Why do you not see a hole in the world?

```conllu
# sent_id = question:biology:260-human-body-deeper-the-brain-and-nerves:t10:2
# text = Why do you not see a hole in the world?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	do	do	AUX	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	5	aux	_	_
3	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	5	nsubj	_	_
4	not	not	PART	RB	Polarity=Neg	5	advmod	_	_
5	see	see	VERB	VBP	Mood=Ind|Person=2|Tense=Pres|VerbForm=Fin	0	root	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	hole	hole	NOUN	NN	Number=Sing	5	obj	_	_
8	in	in	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	world	world	NOUN	NN	Number=Sing	7	nmod	_	SpaceAfter=No
11	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **see** | present · do-support | you | a hole |  | the world |  |  | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer hole=Stimulus |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Only old people have a blind spot

```conllu
# sent_id = question:biology:260-human-body-deeper-the-brain-and-nerves:t10:o1:1
# text = Only old people have a blind spot
1	Only	only	ADV	RB	_	3	advmod	_	_
2	old	old	ADJ	JJ	Degree=Pos	3	amod	_	_
3	people	people	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	blind	blind	ADJ	JJ	Degree=Pos	7	amod	_	_
7	spot	spot	NOUN	NN	Number=Sing	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | old people | a blind spot |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent spot=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
The other ear covers it

```conllu
# sent_id = question:biology:260-human-body-deeper-the-brain-and-nerves:t10:o2:1
# text = The other ear covers it
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	other	other	ADJ	JJ	Degree=Pos	3	amod	_	_
3	ear	ear	NOUN	NN	Number=Sing	4	nsubj	_	_
4	covers	cover	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cover** | present | the other ear | it |  |  |  |  | vn fill-9.8-1 «NP V NP»: agent=Theme it=Destination |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
The brain fills it in so you never notice

```conllu
# sent_id = question:biology:260-human-body-deeper-the-brain-and-nerves:t10:o3:1
# text = The brain fills it in so you never notice
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	brain	brain	NOUN	NN	Number=Sing	3	nsubj	_	_
3	fills	fill	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obj	_	_
5	in	in	SCONJ	IN	_	9	mark	_	_
6	so	so	ADV	RB	_	9	advmod	_	_
7	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	9	nsubj	_	_
8	never	never	ADV	RB	PronType=Neg	9	advmod	_	_
9	notice	notice	VERB	VBP	Tense=Pres|VerbForm=Fin	3	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **fill** | present | the brain | it |  |  |  |  | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent it=Patient |
| 2 | **not** **notice** | present | you |  |  |  |  |  | vn see-30.1-1 «NP V S\_ING»: agent=Experiencer |

### Option 4 · ← Mova's choice {#o4}

<!-- .ven lang=en -->
The blind spot moves around too fast for you to see it

```conllu
# sent_id = question:biology:260-human-body-deeper-the-brain-and-nerves:t10:o4:1
# text = The blind spot moves around too fast for you to see it
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	blind	blind	ADJ	JJ	Degree=Pos	3	amod	_	_
3	spot	spot	NOUN	NN	Number=Sing	4	nsubj	_	_
4	moves	move	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	around	around	ADV	RB	_	4	advmod	_	_
6	too	too	ADV	RB	_	7	advmod	_	_
7	fast	fast	ADV	RB	Degree=Pos	4	advmod	_	_
8	for	for	SCONJ	IN	_	11	mark	_	_
9	you	you	PRON	PRP	Case=Nom|Person=2|PronType=Prs	11	nsubj	_	_
10	to	to	PART	TO	_	11	mark	_	_
11	see	see	VERB	VB	VerbForm=Inf	4	advcl	_	_
12	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **move around** | present | the blind spot |  |  |  |  | around, fast *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 2 | **see** | to-infinitive | you | spot |  |  |  |  | vn comprehend-87.2-1-1 «NP V NP»: agent=Experiencer it=Stimulus |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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