"Manned space flight is costly and more 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 cost and risks associated with sending men and women into space. Therefore we should invest our resources in unmanned flight."
While it is true that unmanned space flights reduce the risk of loss of human life, it is completely unwarranted that all resources should be invested in unmanned space flight. The writer of the letter makes various assumptions about both manned and unmanned flights that are completely ungrounded. No evidences have been provided to support the superiority of unmanned flights in the passage. Thus, the conclusion is dubious.
Firstly, the writer assumes that few successful unmanned space flights is enough to validate the fact that unmanned space flights can accumulate all data that a manned space flight can. There have been no mention about the tasks that require human presence- either survellience or performing work itself. If all resources were to be invested in unmanned flights, manned flights would be dearthed and such activities requiring human supremacy would be limited.
Second, the writer has not mentioned a thing about the budgeting of unmanned space flight. So, is the unmanned flight cheaper than manned space flight? If not, why disrupt an economical process for something that requires more money and resources have to be gathered? Also, there is no mention about the reliability of the unmanned space flights against manned space flights. Have there been no accidents with the unmanned space flights so far? These questions casts a serious doubt in the conclusion proposed by writer.
Furthermore, the writer has not expressed anything about crucial flight decisions. Certain unprecedented fallacies may arise during flight conditions that could be solved a human on board. Unmanned space flights may have to be aborted in such cases. That will a huge loss of investment and resources which is the not precisely what the writer suggests.
The writer lacks an elaborate research on this topic and have presented his views based on incomplete evidences. There are several ungrounded assumptions made by the writer which need further research. Unless a bunch of concrete evidences are provided to maintain the superiority of unmanned space flights, the conclusion cannot be regarded true.
Comments
Essay evaluation report
samples:
https://www.testbig.com/gmatgre-essays/following-opinion-was-provided-l…
----------------------------
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: 20 15
No. of Words: 334 350
No. of Characters: 1743 1500
No. of Different Words: 163 200
Fourth Root of Number of Words: 4.275 4.7
Average Word Length: 5.219 4.6
Word Length SD: 2.616 2.4
No. of Words greater than 5 chars: 137 100
No. of Words greater than 6 chars: 106 80
No. of Words greater than 7 chars: 74 40
No. of Words greater than 8 chars: 44 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 16.7 21.0
Sentence Length SD: 6.157 7.5
Use of Discourse Markers (%): 0.6 0.12
Sentence-Text Coherence: 0.358 0.35
Sentence-Para Coherence: 0.54 0.50
Sentence-Sentence Coherence: 0.07 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 9, column 18, Rule ID: A_UNCOUNTABLE[3]
Message: Uncountable nouns are usually not used with an indefinite article. Use simply 'elaborate research'.
Suggestion: elaborate research
...he writer suggests. The writer lacks an elaborate research on this topic and have presented his vi...
^^^^^^^^^^^^^^^^^^^^^
Transition Words or Phrases used:
also, first, firstly, furthermore, if, may, second, so, thus, while, it is true
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 22.0 19.6327345309 112% => OK
Auxiliary verbs: 11.0 12.9520958084 85% => OK
Conjunction : 6.0 11.1786427146 54% => More conjunction wanted.
Relative clauses : 12.0 13.6137724551 88% => OK
Pronoun: 16.0 28.8173652695 56% => OK
Preposition: 34.0 55.5748502994 61% => OK
Nominalization: 5.0 16.3942115768 30% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1792.0 2260.96107784 79% => OK
No of words: 334.0 441.139720559 76% => More content wanted.
Chars per words: 5.36526946108 5.12650576532 105% => OK
Fourth root words length: 4.27500489853 4.56307096286 94% => OK
Word Length SD: 2.66695051497 2.78398813304 96% => OK
Unique words: 168.0 204.123752495 82% => More unique words wanted.
Unique words percentage: 0.502994011976 0.468620217663 107% => OK
syllable_count: 542.7 705.55239521 77% => OK
avg_syllables_per_word: 1.6 1.59920159681 100% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 4.96107784431 60% => OK
Article: 7.0 8.76447105788 80% => OK
Subordination: 4.0 2.70958083832 148% => OK
Conjunction: 0.0 1.67365269461 0% => OK
Preposition: 0.0 4.22255489022 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 20.0 19.7664670659 101% => OK
Sentence length: 16.0 22.8473053892 70% => The Avg. Sentence Length is relatively short.
Sentence length SD: 37.9175421144 57.8364921388 66% => OK
Chars per sentence: 89.6 119.503703932 75% => OK
Words per sentence: 16.7 23.324526521 72% => OK
Discourse Markers: 3.95 5.70786347227 69% => OK
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 1.0 5.25449101796 19% => OK
Sentences with positive sentiment : 4.0 8.20758483034 49% => More positive sentences wanted.
Sentences with negative sentiment : 7.0 6.88822355289 102% => OK
Sentences with neutral sentiment: 9.0 4.67664670659 192% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.267858553124 0.218282227539 123% => OK
Sentence topic coherence: 0.0957634482752 0.0743258471296 129% => OK
Sentence topic coherence SD: 0.0876454804434 0.0701772020484 125% => OK
Paragraph topic coherence: 0.170296104822 0.128457276422 133% => OK
Paragraph topic coherence SD: 0.0742951806426 0.0628817314937 118% => OK
Essay readability:
automated_readability_index: 12.2 14.3799401198 85% => Automated_readability_index is low.
flesch_reading_ease: 55.24 48.3550499002 114% => OK
smog_index: 3.1 7.1628742515 43% => Smog_index is low.
flesch_kincaid_grade: 9.5 12.197005988 78% => OK
coleman_liau_index: 13.57 12.5979740519 108% => OK
dale_chall_readability_score: 8.31 8.32208582834 100% => OK
difficult_words: 82.0 98.500998004 83% => More difficult words wanted.
linsear_write_formula: 11.0 12.3882235529 89% => OK
gunning_fog: 8.4 11.1389221557 75% => OK
text_standard: 10.0 11.9071856287 84% => OK
What are above readability scores?
---------------------
Rates: 62.5 out of 100
Scores by essay e-grader: 3.75 Out of 6
---------------------
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.