The lecture disproves what is mentioned in the reading material. According to the passage, the burning mirror story is questioned by several reasons. The professor talks about the same issue. However, she thinks that the story of burning mirror is not a myth, but possible. Then she represents some evidences to demonstrate her statement.
For one thing, while the passage mentions that ancient Greek is not able to build a large mirror that have a precise parabolic curvature, the professor rebuts this by saying that this problem can be solved by using tons of small mirrors. Because the ancient Greek can use many small mirror to create a huge mirror that is parabolic.
Moreover, contrary to the statement in the reading that it will take a long time before making a fire, the professor insists that this experiment does not explain every possibility because it is based on wood. Another material used on the ship is pitch. Pitch can catch fire easily within seconds, and fire can spread everywhere then.
Finally, the professor asserts that burning mirror is actually more effective way to defend enemy, while the passage says that the ancient Greek can use flaming arrows instead. Flaming arrows are notable, so the soldiers on the ship can put the fire in advance, while the burning mirror can set a fire in unobservable place on the ship, which is surprising. So the burning mirror is more effective than flaming arrows.
Grammar and spelling errors:
Line 3, column 239, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Because” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
... solved by using tons of small mirrors. Because the ancient Greek can use many small mi...
^^^^^^^
Discourse Markers used:
['actually', 'but', 'finally', 'however', 'moreover', 'second', 'so', 'then', 'while', 'for one thing']
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance in Part of Speech:
Nouns: 0.232209737828 0.261695866417 89% => OK
Verbs: 0.183520599251 0.158904122519 115% => OK
Adjectives: 0.0823970037453 0.0723426182421 114% => OK
Adverbs: 0.0524344569288 0.0435111971325 121% => OK
Pronouns: 0.0187265917603 0.0277247811725 68% => OK
Prepositions: 0.116104868914 0.128828473217 90% => OK
Participles: 0.0561797752809 0.0370669169778 152% => OK
Conjunctions: 2.46497477028 2.5805825403 96% => OK
Infinitives: 0.0224719101124 0.0208969081088 108% => OK
Particles: 0.0 0.00154638098197 0% => OK
Determiners: 0.134831460674 0.128158765124 105% => OK
Modal_auxiliary: 0.0299625468165 0.0158828679856 189% => OK
WH_determiners: 0.0187265917603 0.0114777025283 163% => OK
Vocabulary words and sentences:
No of characters: 1435.0 1645.83664459 87% => OK
No of words: 241.0 271.125827815 89% => More content wanted.
Chars per words: 5.95435684647 6.08160592843 98% => OK
Fourth root words length: 3.94007293032 4.04852973271 97% => OK
words length more than 5 chars: 0.377593360996 0.374372842146 101% => OK
words length more than 6 chars: 0.273858921162 0.287516216867 95% => OK
words length more than 7 chars: 0.165975103734 0.187439937562 89% => OK
words length more than 8 chars: 0.107883817427 0.113142543107 95% => OK
Word Length SD: 2.46497477028 2.5805825403 96% => OK
Unique words: 134.0 145.348785872 92% => OK
Unique words percentage: 0.55601659751 0.539623497131 103% => OK
Word variations: 53.9483983562 53.8517498576 100% => OK
How many sentences: 13.0 13.0529801325 100% => OK
Sentence length: 18.5384615385 21.7502111507 85% => OK
Sentence length SD: 64.3420960604 49.3711431718 130% => OK
Chars per sentence: 110.384615385 132.220823453 83% => OK
Words per sentence: 18.5384615385 21.7502111507 85% => OK
Discourse Markers: 0.769230769231 0.878197800319 88% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 3.39072847682 29% => OK
Readability: 45.9243536546 50.5018328374 91% => OK
Elegance: 1.58823529412 1.90840788429 83% => OK
Coherence and Cohesion:
Essay topic to essay body coherence: 0.595350951254 0.549887131256 108% => OK
Sentence sentence coherence: 0.132044928861 0.142949733639 92% => OK
Sentence sentence coherence SD: 0.0905781179502 0.0787303798458 115% => OK
Sentence paragraph coherence: 0.608714241625 0.631733273073 96% => OK
Sentence paragraph coherence SD: 0.175325865078 0.139662658121 126% => OK
Sentence topic coherence: 0.276071657889 0.266732575781 104% => OK
Sentence topic coherence SD: 0.11248559489 0.103435571967 109% => OK
Paragraph paragraph coherence: 0.31229359615 0.414875509568 75% => OK
Paragraph paragraph coherence SD: 0.0523064306246 0.0530846634433 99% => OK
Paragraph topic coherence: 0.422036442139 0.40443939384 104% => OK
Paragraph topic coherence SD: 0.073550524101 0.0528353158467 139% => OK
Task Achievement:
Sentences with positive sentiment : 2.0 4.33554083885 46% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 5.0 4.26048565121 117% => OK
Positive topic words: 1.0 3.49668874172 29% => More positive topic words wanted.
Negative topic words: 3.0 3.62251655629 83% => OK
Neutral topic words: 3.0 3.1766004415 94% => OK
Total topic words: 7.0 10.2958057395 68% => OK
What are sentences with positive/Negative/neutral sentiment?
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Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
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Note: This is not the final score. 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.