Easter Island civilization collapse
The lecture challenges the theories about the collapse of Easter Island’s civilization provided by the reading passage.
First, it attacks the rat infestation theory. The lecture states that, while there were rats on the Easter Islands and there is evidence that they did, in fact, eat palm tree seeds, there still was enough food to feed the population. It mentions, that the islanders were prodigious fishers and 60% of their food came from the sea. Moreover, they knew how to build stone gardens to grow crops such as potatoes even on eroded soil.
The second theory that the lecture is refuting is the theory about large-scale warfare. Archeologists found a lot of curved blades on Easter Island, but modern scientists think they are not even weapons: most of them are not sharp or pointed. The scientists suggest that those blades were the instruments used for cutting stones, not for combat.
Finally, the lecture debunks the third theory, the one about civilization's collapse being caused by the diseases brought by visitors from Europe and South America. The lecture states that even though those diseases were detrimental to the island’s population, only 3000 people lived on the islands during the first contact in the 19th century. However, in the 17th century, the estimated population of Easter Island was around 20000 people. This suggests that whatever caused the civilization collapse happened long before the first contact with those visitors.
All things considered, it looks like there should be another theory that explains the collapse of Easter Island’s civilization.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2023-08-19 | Yash Mehta | 84 | view |
| 2023-08-03 | cringelord | 3 | view |
| 2022-09-20 | groot | 80 | view |
| 2022-09-15 | opryzhek | 81 | view |
| 2022-05-30 | Pri_Judy | 90 | view |
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Transition Words or Phrases used:
but, finally, first, however, look, moreover, second, so, still, third, while, in fact, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 13.0 10.4613686534 124% => OK
Auxiliary verbs: 1.0 5.04856512141 20% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 8.0 12.0772626932 66% => More relative clauses wanted.
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 30.0 30.3222958057 99% => OK
Nominalization: 8.0 5.01324503311 160% => OK
Performance on vocabulary words:
No of characters: 1345.0 1373.03311258 98% => OK
No of words: 255.0 270.72406181 94% => More content wanted.
Chars per words: 5.27450980392 5.08290768461 104% => OK
Fourth root words length: 3.99608801488 4.04702891845 99% => OK
Word Length SD: 2.56134576315 2.5805825403 99% => OK
Unique words: 155.0 145.348785872 107% => OK
Unique words percentage: 0.607843137255 0.540411800872 112% => OK
syllable_count: 397.8 419.366225166 95% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 3.25607064018 184% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 13.0 13.0662251656 99% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 39.1675206588 49.2860985944 79% => OK
Chars per sentence: 103.461538462 110.228320801 94% => OK
Words per sentence: 19.6153846154 21.698381199 90% => OK
Discourse Markers: 7.30769230769 7.06452816374 103% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.396685593004 0.272083759551 146% => OK
Sentence topic coherence: 0.131455908296 0.0996497079465 132% => OK
Sentence topic coherence SD: 0.127708260952 0.0662205650399 193% => OK
Paragraph topic coherence: 0.253304207413 0.162205337803 156% => OK
Paragraph topic coherence SD: 0.142005286106 0.0443174109184 320% => More connections among paragraphs wanted.
Essay readability:
automated_readability_index: 13.2 13.3589403974 99% => OK
flesch_reading_ease: 52.19 53.8541721854 97% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 10.7 11.0289183223 97% => OK
coleman_liau_index: 13.29 12.2367328918 109% => OK
dale_chall_readability_score: 8.79 8.42419426049 104% => OK
difficult_words: 68.0 63.6247240618 107% => OK
linsear_write_formula: 8.0 10.7273730684 75% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Rates: 81.6666666667 out of 100
Scores by essay e-grader: 24.5 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.