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.
Regarding this issue, the author of the passage contends that we should focus more on unmanned space flights rather than manned space flights. He provides evidence to suggest that there is more cost and risk in manned flights. Though the argument may have merit, because of lack of relevant evidence, unstated assumptions and vague terminology, the author of the argument fails to provide a valid case and his argument is unsubstantiated and deeply flawed.
Primarily, the author does not mention anything about the skills required for unmanned space flights. Maybe we do not have sufficient resources having skills about unmanned flights. Providing existing resources with the skills or training new resources may incur higher costs than manned flights. Maybe we do not have developed technologies to implement supplant all the manned flights by unmanned probes. Developing such technologies, gaining expertise, proving trainings on new findings maybe even more costly.
Secondarily, the author says that the recent success of a series of unmanned probes and satellites has given a great deal of useful information. The author does not mention any details about the type of information gathered by unmanned probes. It maybe the case that unmanned space probes gathered only image of certain celestial bodies whereas, in projects like "exploring life on planet Mars" requires more than just the images of the planet. It requires skilled scientists and astronauts who can go there and examine the atmosphere and other living conditions of the planet. It cannot be done by the unmanned space flights.
On the contrary, the author is very much correct in the argument that manned flights involve risk of sending men and women into space. But, information useful for exploring other forms of life cannot be done by incurring some risk. Had the author mentioned that unmanned flights are exploring informations similar to the manned flight, he would have been able to back and validate his point. But, soince the author does not mention anything about the depth and the amount of the information gathered, he fails to put forward the valid case for his argument.
Last but not the least, manned and unmanned probes have equal importance. Some projects can use unmanned probes but it does not contend that these probes can replace manned probes. Even though manned probes involves risk, they can, in long run provide better infromation.
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- ssss 3
Comments
Essay evaluation report
Sentence: But, soince the author does not mention anything about the depth and the amount of the information gathered, he fails to put forward the valid case for his argument.
Error: soince Suggestion: since
Sentence: Even though manned probes involves risk, they can, in long run provide better infromation.
Error: infromation Suggestion: information
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flaws:
the arguments are not exactly 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: 3.5 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: 391 350
No. of Characters: 1997 1500
No. of Different Words: 190 200
Fourth Root of Number of Words: 4.447 4.7
Average Word Length: 5.107 4.6
Word Length SD: 2.476 2.4
No. of Words greater than 5 chars: 162 100
No. of Words greater than 6 chars: 108 80
No. of Words greater than 7 chars: 75 40
No. of Words greater than 8 chars: 36 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 19.55 21.0
Sentence Length SD: 7.089 7.5
Use of Discourse Markers (%): 0.45 0.12
Sentence-Text Coherence: 0.356 0.35
Sentence-Para Coherence: 0.571 0.50
Sentence-Sentence Coherence: 0.171 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 4, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...n new findings maybe even more costly. Secondarily, the author says that the re...
^^^^
Line 5, column 589, Rule ID: ENGLISH_WORD_REPEAT_BEGINNING_RULE
Message: Three successive sentences begin with the same word. Reword the sentence or use a thesaurus to find a synonym.
... other living conditions of the planet. It cannot be done by the unmanned space fl...
^^
Line 10, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...n long run provide better infromation.
^^^
Transition Words or Phrases used:
but, if, may, regarding, second, so, whereas, on the contrary
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 19.6327345309 36% => More to be verbs wanted.
Auxiliary verbs: 10.0 12.9520958084 77% => OK
Conjunction : 15.0 11.1786427146 134% => OK
Relative clauses : 8.0 13.6137724551 59% => More relative clauses wanted.
Pronoun: 23.0 28.8173652695 80% => OK
Preposition: 40.0 55.5748502994 72% => OK
Nominalization: 17.0 16.3942115768 104% => OK
Performance on vocabulary words:
No of characters: 2066.0 2260.96107784 91% => OK
No of words: 391.0 441.139720559 89% => More content wanted.
Chars per words: 5.28388746803 5.12650576532 103% => OK
Fourth root words length: 4.44676510885 4.56307096286 97% => OK
Word Length SD: 2.61112168422 2.78398813304 94% => OK
Unique words: 195.0 204.123752495 96% => OK
Unique words percentage: 0.498721227621 0.468620217663 106% => OK
syllable_count: 632.7 705.55239521 90% => OK
avg_syllables_per_word: 1.6 1.59920159681 100% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 7.0 4.96107784431 141% => OK
Article: 6.0 8.76447105788 68% => OK
Subordination: 3.0 2.70958083832 111% => OK
Conjunction: 0.0 1.67365269461 0% => OK
Preposition: 5.0 4.22255489022 118% => OK
Performance on sentences:
How many sentences: 20.0 19.7664670659 101% => OK
Sentence length: 19.0 22.8473053892 83% => The Avg. Sentence Length is relatively short.
Sentence length SD: 43.7313102937 57.8364921388 76% => OK
Chars per sentence: 103.3 119.503703932 86% => OK
Words per sentence: 19.55 23.324526521 84% => OK
Discourse Markers: 3.05 5.70786347227 53% => More transition words/phrases wanted.
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 3.0 5.25449101796 57% => OK
Sentences with positive sentiment : 7.0 8.20758483034 85% => OK
Sentences with negative sentiment : 5.0 6.88822355289 73% => OK
Sentences with neutral sentiment: 8.0 4.67664670659 171% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.321764773078 0.218282227539 147% => OK
Sentence topic coherence: 0.103981074677 0.0743258471296 140% => OK
Sentence topic coherence SD: 0.0701060969511 0.0701772020484 100% => OK
Paragraph topic coherence: 0.175726558707 0.128457276422 137% => OK
Paragraph topic coherence SD: 0.0507564658248 0.0628817314937 81% => OK
Essay readability:
automated_readability_index: 13.2 14.3799401198 92% => Automated_readability_index is low.
flesch_reading_ease: 52.19 48.3550499002 108% => OK
smog_index: 3.1 7.1628742515 43% => Smog_index is low.
flesch_kincaid_grade: 10.7 12.197005988 88% => OK
coleman_liau_index: 13.34 12.5979740519 106% => OK
dale_chall_readability_score: 8.09 8.32208582834 97% => OK
difficult_words: 87.0 98.500998004 88% => OK
linsear_write_formula: 10.5 12.3882235529 85% => OK
gunning_fog: 9.6 11.1389221557 86% => OK
text_standard: 11.0 11.9071856287 92% => 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.