Manned space flight is costly and dangerous. Moreover, the recent success of a series of unmanned space probes and satellites has demonstrated that a great deal of useful information can be gathered without the costs and risks associated with sending men and women into space. Therefore, we should invest our resources in unmanned space flight.
The author gave an opinion about the investing the resources on the unmanned space flight instead of manned flight by stating that unmanned flight has lower costs and risks. But this conslusion is based on several conslusion which if proved otherwise can undermine the base of this conslusion reached in the opinion.
The author assumed that the all the works required in the space flight can done unmanned. It might be possible that many works like repairs and research up there requires a person to be involved. For example, the International Space Station sometimes requires the astronauts to do space walks to do repair works. Also, if the goals of the mission is to study the affects of deep space travel on human for future, the is no alternative of manned space flight. Thus it might be imperative to continue the research into manned flight.
Furthermore the author said here that manned space flight is costly and dangerous but did not provide any data on that. If we actually see the data on the space flights, we could see that although there had been some fatal accidents, but most of them has been successfull. Also, the author assumes here that the functions intended here for the space flight requires no men. If the goal of the spcae flight is to establish a colony on the mars, it is not possible without sending human in that flight. Also, it is possible that new technology invented can actually significantly reduce the costs and risks for manned flight.
Also, in this argument the author did not give any information about the success of the manned flight. The information given as the recent success of unmanned flights could have been an anomaly. At the same time it is possible that the manned flight has seen success as good as or even better than their counterpart of unmanned flights. It is also possible that the advancement in technology has minimized the risks in the manned flight and made it more safer than the previous era. Without this information this opinion sounds inconclusive.
Althought the proposal of the author has merit to it, but there are some assumtions made to reach the proposal have some flaws. Before making a decision about diverting all the resources toward the unmanned flights, these assumptions needs to be scrutinized more carefully.
Comments
Essay evaluation report
samples:
https://www.testbig.com/gmatgre-essays/following-opinion-was-provided-l…
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Attribute Value Ideal
Final score: 3.0 out of 6
Category: Satisfactory Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 19 15
No. of Words: 391 350
No. of Characters: 1868 1500
No. of Different Words: 176 200
Fourth Root of Number of Words: 4.447 4.7
Average Word Length: 4.777 4.6
Word Length SD: 2.49 2.4
No. of Words greater than 5 chars: 132 100
No. of Words greater than 6 chars: 90 80
No. of Words greater than 7 chars: 64 40
No. of Words greater than 8 chars: 35 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 20.579 21.0
Sentence Length SD: 5.678 7.5
Use of Discourse Markers (%): 0.632 0.12
Sentence-Text Coherence: 0.341 0.35
Sentence-Para Coherence: 0.557 0.50
Sentence-Sentence Coherence: 0.101 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 1, column 225, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...onslusion is based on several conslusion which if proved otherwise can undermine ...
^^
Line 1, column 233, Rule ID: IF_IS[2]
Message: Did you mean 'is'?
Suggestion: is
...n is based on several conslusion which if proved otherwise can undermine the base...
^^
Line 3, column 76, Rule ID: PRP_PAST_PART[3]
Message: Did you mean 'do' or 'be done'?
Suggestion: do; be done
... works required in the space flight can done unmanned. It might be possible that man...
^^^^
Line 3, column 460, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Thus,
... no alternative of manned space flight. Thus it might be imperative to continue the ...
^^^^
Line 5, column 1, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: Furthermore,
...nue the research into manned flight. Furthermore the author said here that manned space ...
^^^^^^^^^^^
Line 7, column 450, Rule ID: MOST_COMPARATIVE[2]
Message: Use only 'safer' (without 'more') when you use the comparative.
Suggestion: safer
... risks in the manned flight and made it more safer than the previous era. Without this inf...
^^^^^^^^^^
Transition Words or Phrases used:
actually, also, but, furthermore, if, so, thus, for example
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 17.0 19.6327345309 87% => OK
Auxiliary verbs: 7.0 12.9520958084 54% => OK
Conjunction : 10.0 11.1786427146 89% => OK
Relative clauses : 12.0 13.6137724551 88% => OK
Pronoun: 29.0 28.8173652695 101% => OK
Preposition: 44.0 55.5748502994 79% => OK
Nominalization: 6.0 16.3942115768 37% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1914.0 2260.96107784 85% => OK
No of words: 391.0 441.139720559 89% => More content wanted.
Chars per words: 4.89514066496 5.12650576532 95% => OK
Fourth root words length: 4.44676510885 4.56307096286 97% => OK
Word Length SD: 2.54307672422 2.78398813304 91% => OK
Unique words: 178.0 204.123752495 87% => More unique words wanted.
Unique words percentage: 0.455242966752 0.468620217663 97% => OK
syllable_count: 591.3 705.55239521 84% => OK
avg_syllables_per_word: 1.5 1.59920159681 94% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 4.96107784431 121% => OK
Article: 6.0 8.76447105788 68% => OK
Subordination: 4.0 2.70958083832 148% => OK
Conjunction: 3.0 1.67365269461 179% => OK
Preposition: 4.0 4.22255489022 95% => OK
Performance on sentences:
How many sentences: 19.0 19.7664670659 96% => OK
Sentence length: 20.0 22.8473053892 88% => OK
Sentence length SD: 28.7262367166 57.8364921388 50% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 100.736842105 119.503703932 84% => OK
Words per sentence: 20.5789473684 23.324526521 88% => OK
Discourse Markers: 3.10526315789 5.70786347227 54% => More transition words/phrases wanted.
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 6.0 5.25449101796 114% => OK
Sentences with positive sentiment : 7.0 8.20758483034 85% => OK
Sentences with negative sentiment : 7.0 6.88822355289 102% => OK
Sentences with neutral sentiment: 5.0 4.67664670659 107% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.306583758513 0.218282227539 140% => OK
Sentence topic coherence: 0.100755167624 0.0743258471296 136% => OK
Sentence topic coherence SD: 0.0561262634592 0.0701772020484 80% => OK
Paragraph topic coherence: 0.160006874869 0.128457276422 125% => OK
Paragraph topic coherence SD: 0.0670310480747 0.0628817314937 107% => OK
Essay readability:
automated_readability_index: 11.9 14.3799401198 83% => Automated_readability_index is low.
flesch_reading_ease: 59.64 48.3550499002 123% => OK
smog_index: 3.1 7.1628742515 43% => Smog_index is low.
flesch_kincaid_grade: 9.9 12.197005988 81% => OK
coleman_liau_index: 11.14 12.5979740519 88% => OK
dale_chall_readability_score: 7.66 8.32208582834 92% => OK
difficult_words: 75.0 98.500998004 76% => More difficult words wanted.
linsear_write_formula: 10.5 12.3882235529 85% => OK
gunning_fog: 10.0 11.1389221557 90% => OK
text_standard: 10.0 11.9071856287 84% => OK
What are above readability scores?
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Rates: 58.33 out of 100
Scores by essay e-grader: 3.5 Out of 6
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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.