Mova0.5 pre-release⌕
☰
home / at school / History / 78

Humanity today: how many we are, how long we live, how poor and how rich

Tests: 5 of 12 right · Exam: 0 of 4 right · Kind: plain · Understood: 6 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 78 of the history course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · wrong ✗

Ivy reads "8 BILLION PEOPLE!!" and her bro goes, "So it'll be 80 billion soon, the planet's cooked." ("Cooked" means doomed.) What's the UN view?

  • 1. It will reach 80 billion by 2040 — ← Mova's choice · score -2
  • 2. Nobody knows anything about population — no support
  • 3. It will drop to 1 billion next year — no support
  • 4. It expects a peak of about 10.3 billion in the 2080s, then a slow fall — ✓ the right answer · no support

Why: It took the question to ask what it is done to. It chose option 1 with score -2, the only option with support. Its support: lesson 78, line 6: «The UN says the world reached 8 billion people on 15 November 2022 and expects about 10.3 billion at the peak in the 2080s, after which the number should slowl…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+1). Against it: the same thing acted on «10.3 billion» (-1); a different action (counts against) (-2). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 2 · right ✓

Raj: "India's got more people than China now, yaar." ("Yaar" means mate, in Indian English.) Is he right?

  • 1. No, the USA has the most people of all — no support
  • 2. Yes, India passed China in 2023 — ← Mova's choice · ✓ the right answer · score 11
  • 3. Yes, India has had the most since 1500 — no support
  • 4. No, China still has twice as many, yaar — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 11, the only option with support. Its support: lesson 78, line 7: «India passed China as the country with the most people in 2023, with more than 1.4 billion.», reached through the remembered sentence the question matched. What matched: the same place «2023» (+5); the same action «pass» (+2); the same doer «india» (+2); the same thing acted on «china» (+2). · the question and its options parsed, with trees and pragmatics

Test 3 · wrong ✗

Gran: "In 1900, folk died at 32, pet." What's more exact?

  • 1. Nobody lived past 20 — ← Mova's choice · no support
  • 2. The average was about 32 because many children died; many adults lived long — ✓ the right answer · no support
  • 3. People lived longer then than now — no support
  • 4. Everyone died on their 32nd birthday — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

Lily: "Extreme poverty dropped? So nobody's poor now, slay!" ("Slay" means great.) What's the honest answer?

  • 1. Poverty was never measured — ← Mova's choice · no support
  • 2. Yes, poverty has completely ended — no support
  • 3. No, poverty has got much worse everywhere in the world since 1820 — no support
  • 4. Far fewer are very poor than in 1820, but about 1 in 10 still are — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 5 · right ✓

Ethan: "Is anyone still hungry? Like, actually?" Best answer?

  • 1. Yes, about 700 million people still do not get enough food — ← Mova's choice · ✓ the right answer · no support
  • 2. No, hunger ended everywhere in the world a long time ago, in 1900 — no support
  • 3. Only people who are on special diets are ever hungry these days — no support
  • 4. Everyone in the world is hungry, all the time, every single day — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 6 · right ✓

Mum: "My gran had eight kids, I've got two." Grace: "Why'd you stop at two, Mum, mid?" What's the bigger pattern?

  • 1. Families shrank worldwide as fewer children died and more girls went to school — ← Mova's choice · ✓ the right answer · no support
  • 2. It was just her own choice and nothing else — no support
  • 3. Large families were banned everywhere — no support
  • 4. Families have grown bigger since 1950 — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

Hiroshi: "So many old people in Japan, it's mad!" His Nigerien penpal: "Here everyone's young!" What would happen to a country with many old and few young people?

  • 1. Nothing would ever change, the country would stay the same — no support
  • 2. Fewer workers would support more retired people — ← Mova's choice · ✓ the right answer · score 4
  • 3. It would need more and more schools for all the children — score 4
  • 4. Everyone in that country would slowly get younger — no support

Why: It took the question to ask what happens next. It chose option 2 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 78, line 12: «About 3 in 10 people in Japan are over 65, while in Niger about half the people are younger than 15; where there are many old people, fewer young workers have…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «fewer young workers» (+3); the same action «support» (+1). · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

Amir: "Everyone's got internet, bruv, even my nan's on TikTok." What's true?

  • 1. Every person on Earth is online these days — ← Mova's choice · no support
  • 2. Only grandmas really use the internet now — no support
  • 3. Over 2 billion people are still offline — ✓ the right answer · no support
  • 4. The internet was switched off in most places in 2020 — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 9 · wrong ✗

Zara's cousin: "People in Chad die younger 'cause they're just less healthy people, innit." What's fairer?

  • 1. Health care, wealth and peace make the big difference, not the people themselves — ✓ the right answer · no support
  • 2. It is because of the weather only — no support
  • 3. People there are born weaker — score 3
  • 4. People in Chad live longer than in Japan — ← Mova's choice · score 4

Why: It took the question to ask which statement is true. It chose option 4 with score 4, against 3 for the next best. Its support: lesson 32, line 17: «Voting lets people choose who makes the laws they must live by.», reached through the option's own match among the sentences about the question's things. What matched: the same action «live» (+2); the same doer «people» (+2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 10 · wrong ✗

Tom's classmate came from Syria. A boy says, "Migration's a new thing, it never used to happen." What's true?

  • 1. Half the world lives abroad — ← Mova's choice · no support
  • 2. Nobody moved before 2000 — no support
  • 3. People have always moved; about 1 in 30 live outside their birth country now — ✓ the right answer · no support
  • 4. Moving country is impossible — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 11 · wrong ✗

Grandad: "Kids today have it easy!" Ben: "Not with homework, Grandad, that's sus!" Who's right?

  • 1. Neither, nothing has changed — ← Mova's choice · no support
  • 2. Only Ben, life was easier in 1900 — no support
  • 3. Only Grandad: life is perfect now and children have no worries at all — no support
  • 4. Both partly: kids are healthier now, but face new worries — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 12 · right ✓

Kai: "How many people are there in Ukraine?" His dad: "Hard to say since the war." Why can't anyone just look it up?

  • 1. Ukraine has never had a census of any kind, not even in Soviet times — score 1
  • 2. War, refugees and fewer births mean estimates differ by millions — ← Mova's choice · ✓ the right answer · score 11
  • 3. Everyone has already counted it exactly — no support
  • 4. The number is a secret — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 11, against 1 for the next best. Its support: lesson 78, line 17: «Since the full-scale invasion in 2022, war, refugees and fewer births have made Ukraine's population hard to count; estimates differ by millions, and about 6 m…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «estimates» (+5); the same action «differ» (+4); the same circumstance (+2). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the date upon which, according to the United Nations, the population of the world attained eight billion persons.

  • 1. The first of January, nineteen hundred — ← Mova's choice · no support
  • 2. The first of January, two thousand and fifty — no support
  • 3. The fifteenth of November, two thousand and twenty-two — ✓ the right answer · no support
  • 4. The fifteenth of November, in the year nineteen hundred and fifty — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Which of the following statements most accurately characterises the low average life expectancy recorded in the year nineteen hundred?

  • 1. It was a clerical error of the census — ← Mova's choice · score 12
  • 2. It resulted from all adults perishing at precisely thirty-two years of age — score 10
  • 3. It resulted principally from the high mortality of young children — ✓ the right answer · score 10
  • 4. It was higher than at present — score 12

Why: It took the question to ask who or what does it. It chose option 1 with score 12, tied with another option at 12 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 78, line 14: «People in Japan live into their mid-80s on average, while in Chad and some other poor countries life expectancy is in the 50s.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same doer «life expectancy» (+4); the same light verb (be, have, do, get, go) (+2). The right option, 3, scored 10. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Select the response consistent with the established facts concerning extreme poverty.

  • 1. It has never affected more than one person in a million — ← Mova's choice · no support
  • 2. It has increased steadily since eighteen hundred and twenty — no support
  • 3. It has declined from the majority of humanity circa eighteen hundred and twenty to approximately one person in ten — ✓ the right answer · no support
  • 4. It has been entirely eliminated — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Ascertain the principal reason for which the population of Ukraine has been difficult to determine since two thousand and twenty-two.

  • 1. The absence of any previous census — ← Mova's choice · no support
  • 2. Warfare, the departure of refugees and a reduction in births — ✓ the right answer · no support
  • 3. A refusal by all citizens to be enumerated — no support
  • 4. The population has in fact been determined with complete precision — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/history/78-humanity-today-how-many-how-long-how-rich/