"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 argument claims that the Manned space flight is costly and dangerous, also the recent success of a series of unmanned space probes and satellites has demonstrated that a great deal of useful information. So we should invest out resource in unmanned flight. Stated in this way the argument fails to mentions several key factors bases on which it could be evaluated. The Conclusion relies on an assumption for which, there is no clear evidence So, The argument is unsubstantiated and uncompleted. However, careful scrutiny of the evidence reveals the little credible support for the author's argument.
First of all, the argument readily assumes that the Manned space flight is costly and dangerous. This is merely an assumption without much solid background. If the author mentions several reasons why this spaceflight is costly and dangerous than it is more plausible. For example, it may be possible we apply same procedure that apply on unmanned spaceflight than it is no more costly. The argument would have been a lot more convincing if it explicitly defined certain reason why Manned spaceflight more costly and dangerous.
Second, The argument claims that the recent success of a series of unmanned space probes and satellites has demonstrated great deal of useful information. This is again weak and unsupported claims as the argument does not provide any explanation. For example how we assume the success of a series of unmanned space? If author mentions successful flight launch of unmanned spaceflight than it is more plausible. For example, if author mention 10 out of 8 successful spaceflights then this argument more effective.
Lastly, The author cites implicitly if unmanned flights are a success so we apply same procedure on Manned than it is also Manned flight a success and cost reduce and great information can be gathered. It is also weak assumption. For example, there are some technology used in unmanned spaceflight so it is possible that it return massive information but we can not say that Manned also return good information.
However, careful scrutiny of the evidence reveals the little credible support for the author's argument with respect to several critical factors and rises several skeptical questions. For example How we can say that unmanned spaceflight was a success ?, How we can say that if we invest unmanned than it is worth to invest? Without this information reader left with the impression that the claims made by the author are more wishful rather than substantive.
In Conclusion, The author's argument unpersuasive as it stands. To bolster it further, the author must provide better concrete evidence. It could be considerably strengthened if the author mentions all relevant facts. In order to asses the merit of certain situation it is essential to have good knowledge about contributing factors.
Comments
Essay evaluation report
flaws:
the arguments are not right on the point. Here goes a sample:
https://www.testbig.com/gmatgre-essays/following-opinion-was-provided-l…
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Attribute Value Ideal
Final score: ? out of 6
Category: Poor Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 0 2
No. of Sentences: 25 15
No. of Words: 460 350
No. of Characters: 2347 1500
No. of Different Words: 182 200
Fourth Root of Number of Words: 4.631 4.7
Average Word Length: 5.102 4.6
Word Length SD: 2.783 2.4
No. of Words greater than 5 chars: 197 100
No. of Words greater than 6 chars: 140 80
No. of Words greater than 7 chars: 97 40
No. of Words greater than 8 chars: 54 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 18.4 21.0
Sentence Length SD: 7.668 7.5
Use of Discourse Markers (%): 0.76 0.12
Sentence-Text Coherence: 0.331 0.35
Sentence-Para Coherence: 0.515 0.50
Sentence-Sentence Coherence: 0.138 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 1, column 303, Rule ID: TO_NON_BASE[1]
Message: The verb after "to" should be in the base form: 'mention'.
Suggestion: mention
...tated in this way the argument fails to mentions several key factors bases on which it c...
^^^^^^^^
Line 1, column 586, Rule ID: POSSESIVE_APOSTROPHE[2]
Message: Possible typo: apostrophe is missing. Did you mean 'authors'' or 'author's'?
Suggestion: authors'; author's
...als the little credible support for the authors argument. First of all, the argument...
^^^^^^^
Line 6, column 317, Rule ID: SENTENCE_FRAGMENT[1]
Message: “If” 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.
... success of a series of unmanned space? If author mentions successful flight launc...
^^
Line 6, column 424, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... than it is more plausible. For example, if author mention 10 out of 8 successful...
^^
Line 10, column 87, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'authors'' or 'author's'?
Suggestion: authors'; author's
...als the little credible support for the authors argument with respect to several critic...
^^^^^^^
Line 13, column 20, Rule ID: POSSESIVE_APOSTROPHE[1]
Message: Possible typo: apostrophe is missing. Did you mean 'authors'' or 'author's'?
Suggestion: authors'; author's
...an substantive. In Conclusion, The authors argument unpersuasive as it stands. To ...
^^^^^^^
Transition Words or Phrases used:
also, but, first, however, if, lastly, may, second, so, then, for example, in conclusion, first of all, with respect to
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 24.0 19.6327345309 122% => OK
Auxiliary verbs: 10.0 12.9520958084 77% => OK
Conjunction : 12.0 11.1786427146 107% => OK
Relative clauses : 12.0 13.6137724551 88% => OK
Pronoun: 39.0 28.8173652695 135% => Less pronouns wanted
Preposition: 36.0 55.5748502994 65% => OK
Nominalization: 27.0 16.3942115768 165% => OK
Performance on vocabulary words:
No of characters: 2412.0 2260.96107784 107% => OK
No of words: 460.0 441.139720559 104% => OK
Chars per words: 5.24347826087 5.12650576532 102% => OK
Fourth root words length: 4.6311565067 4.56307096286 101% => OK
Word Length SD: 2.87085059955 2.78398813304 103% => OK
Unique words: 189.0 204.123752495 93% => More unique words wanted.
Unique words percentage: 0.410869565217 0.468620217663 88% => More unique words wanted or less content wanted.
syllable_count: 744.3 705.55239521 105% => OK
avg_syllables_per_word: 1.6 1.59920159681 100% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 5.0 4.96107784431 101% => OK
Article: 9.0 8.76447105788 103% => OK
Subordination: 3.0 2.70958083832 111% => OK
Conjunction: 0.0 1.67365269461 0% => OK
Preposition: 4.0 4.22255489022 95% => OK
Performance on sentences:
How many sentences: 25.0 19.7664670659 126% => OK
Sentence length: 18.0 22.8473053892 79% => The Avg. Sentence Length is relatively short.
Sentence length SD: 45.8499116684 57.8364921388 79% => OK
Chars per sentence: 96.48 119.503703932 81% => OK
Words per sentence: 18.4 23.324526521 79% => OK
Discourse Markers: 4.76 5.70786347227 83% => OK
Paragraphs: 6.0 5.15768463074 116% => OK
Language errors: 6.0 5.25449101796 114% => OK
Sentences with positive sentiment : 14.0 8.20758483034 171% => OK
Sentences with negative sentiment : 10.0 6.88822355289 145% => OK
Sentences with neutral sentiment: 1.0 4.67664670659 21% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.300147620283 0.218282227539 138% => OK
Sentence topic coherence: 0.0947096909693 0.0743258471296 127% => OK
Sentence topic coherence SD: 0.134302160207 0.0701772020484 191% => OK
Paragraph topic coherence: 0.167833332157 0.128457276422 131% => OK
Paragraph topic coherence SD: 0.0881407101091 0.0628817314937 140% => OK
Essay readability:
automated_readability_index: 12.5 14.3799401198 87% => Automated_readability_index is low.
flesch_reading_ease: 53.21 48.3550499002 110% => OK
smog_index: 3.1 7.1628742515 43% => Smog_index is low.
flesch_kincaid_grade: 10.3 12.197005988 84% => OK
coleman_liau_index: 13.11 12.5979740519 104% => OK
dale_chall_readability_score: 7.72 8.32208582834 93% => OK
difficult_words: 93.0 98.500998004 94% => OK
linsear_write_formula: 8.5 12.3882235529 69% => OK
gunning_fog: 9.2 11.1389221557 83% => OK
text_standard: 13.0 11.9071856287 109% => OK
What are above readability scores?
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Rates: 66.67 out of 100
Scores by essay e-grader: 4.0 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.