The following opinion was provided in a letter to the editor of a national aeronautics magazine:
"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."
According to the letter provided to the editor of a national aeronautics magazine, the author concludes that they should invest in unmanned space flight compare to manned space flight. The author concludes this, on the basis of recent success of series of unmanned space probes and statellites. The argument rest on series of assumptions which are unpersuasive and illogical. A few key factors to prove it are:
First, the author states that the manned space flight are costly and dangerous. The author has not mention how much more cost does it takes for a manned space flight to operate compare then unmanned. Furthermore, there is no mention of the risk or any kind of accidents which might have been caused due to manned space flight. If the author wants to make his point stronger then he should have provide us with all the facts and figures comparing the cost and safety of unmanned and manned space flights.
Secondly, author states that due recent success of unmanned space probes and statellites they should focus more on unmanned compare than manned space flight. There are many instances when an automatic instruction cannot be helpful. It could happen that the coarse of the unmanned space flight shifts due to some reason and we are not able to control it from the ground. This could led to a serious problem and a larger accident could be caused. If this happen in a manned space flight then there are some chances that the astronaut whould be able to control the flight and prevent the accident from happening.
Thirdly, the author claims that the unmanned space probes are sufficient in gathering information. So, there is no need to send men and women to space. Sending a space flight is a costly process and if we are sending one we need an accurate data. It might happen that due to some error the unmanned space probe are not able to gather information, but this would not be a case in manned space flight as a human can always gather the information. Unmanned space probes are prefeeded with instruction and no new instruction can be given to them whereas, this is not the case with manned space flight they are given few instructions and they can act in some way when special needs are required.
In conclusion, if we stop investing in manned space flight then it would stop the progress of the society. If humankind wants to settle on some other planet in the future, then human needs to explore the space and see that can a human survive. So, by just investing the resources in unmanned space flight would be a prudent choice.
Comments
e-rater score report
Attribute Value Ideal
Final score: 3.5 out of 6
Category: Satisfactory Excellent
No. of Grammatical Errors: 9 2
No. of Spelling Errors: 5 2
No. of Sentences: 20 15
No. of Words: 447 350
No. of Characters: 2068 1500
No. of Different Words: 186 200
Fourth Root of Number of Words: 4.598 4.7
Average Word Length: 4.626 4.6
Word Length SD: 2.34 2.4
No. of Words greater than 5 chars: 153 100
No. of Words greater than 6 chars: 83 80
No. of Words greater than 7 chars: 54 40
No. of Words greater than 8 chars: 32 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 22.35 21.0
Sentence Length SD: 8.487 7.5
Use of Discourse Markers (%): 0.7 0.12
Sentence-Text Coherence: 0.366 0.35
Sentence-Para Coherence: 0.366 0.50
Sentence-Sentence Coherence: 0.143 0.07
Number of Paragraphs: 1 5
Grammar and spelling errors:
Line 1, column 407, Rule ID: IT_VBZ[1]
Message: Did you mean 'is'?
Suggestion: is
...llogical. A few key factors to prove it are: First, the author states that the man...
^^^
Line 2, column 100, Rule ID: HAVE_PART_AGREEMENT[2]
Message: Possible agreement error -- use past participle here: 'mentioned'.
Suggestion: mentioned
...ostly and dangerous. The author has not mention how much more cost does it takes for a ...
^^^^^^^
Line 2, column 135, Rule ID: DOES_NP_VBZ[1]
Message: Did you mean 'take'?
Suggestion: take
... not mention how much more cost does it takes for a manned space flight to operate co...
^^^^^
Line 2, column 135, Rule ID: DOES_X_HAS[1]
Message: Did you mean 'take'? As 'do' is already inflected, the verb cannot also be inflected.
Suggestion: take
... not mention how much more cost does it takes for a manned space flight to operate co...
^^^^^
Line 2, column 366, Rule ID: COMPARISONS_THEN[1]
Message: Did you mean 'stronger than'?
Suggestion: stronger than
.... If the author wants to make his point stronger then he should have provide us with all the ...
^^^^^^^^^^^^^
Line 2, column 375, Rule ID: COMP_THAN[3]
Message: Comparison requires 'than', not 'then' nor 'as'.
Suggestion: than
...author wants to make his point stronger then he should have provide us with all the ...
^^^^
Line 2, column 395, Rule ID: HAVE_PART_AGREEMENT[1]
Message: Use past participle here: 'provided'.
Suggestion: provided
... his point stronger then he should have provide us with all the facts and figures compa...
^^^^^^^
Line 3, column 382, Rule ID: DID_BASEFORM[1]
Message: The verb 'could' requires the base form of the verb: 'lead'
Suggestion: lead
... control it from the ground. This could led to a serious problem and a larger accid...
^^^
Transition Words or Phrases used:
but, first, furthermore, if, second, secondly, so, then, third, thirdly, whereas, in conclusion, kind of
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 23.0 19.6327345309 117% => OK
Auxiliary verbs: 18.0 12.9520958084 139% => OK
Conjunction : 17.0 11.1786427146 152% => OK
Relative clauses : 12.0 13.6137724551 88% => OK
Pronoun: 31.0 28.8173652695 108% => OK
Preposition: 48.0 55.5748502994 86% => OK
Nominalization: 9.0 16.3942115768 55% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 2109.0 2260.96107784 93% => OK
No of words: 447.0 441.139720559 101% => OK
Chars per words: 4.71812080537 5.12650576532 92% => OK
Fourth root words length: 4.59808378696 4.56307096286 101% => OK
Word Length SD: 2.42923560658 2.78398813304 87% => OK
Unique words: 185.0 204.123752495 91% => More unique words wanted.
Unique words percentage: 0.413870246085 0.468620217663 88% => More unique words wanted or less content wanted.
syllable_count: 651.6 705.55239521 92% => OK
avg_syllables_per_word: 1.5 1.59920159681 94% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 4.96107784431 81% => OK
Article: 7.0 8.76447105788 80% => OK
Subordination: 4.0 2.70958083832 148% => OK
Conjunction: 1.0 1.67365269461 60% => OK
Preposition: 4.0 4.22255489022 95% => OK
Performance on sentences:
How many sentences: 20.0 19.7664670659 101% => OK
Sentence length: 22.0 22.8473053892 96% => OK
Sentence length SD: 47.4241236081 57.8364921388 82% => OK
Chars per sentence: 105.45 119.503703932 88% => OK
Words per sentence: 22.35 23.324526521 96% => OK
Discourse Markers: 5.2 5.70786347227 91% => OK
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 8.0 5.25449101796 152% => OK
Sentences with positive sentiment : 4.0 8.20758483034 49% => More positive sentences wanted.
Sentences with negative sentiment : 10.0 6.88822355289 145% => OK
Sentences with neutral sentiment: 6.0 4.67664670659 128% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.358639203737 0.218282227539 164% => OK
Sentence topic coherence: 0.132869118384 0.0743258471296 179% => OK
Sentence topic coherence SD: 0.0869118541181 0.0701772020484 124% => OK
Paragraph topic coherence: 0.234397792653 0.128457276422 182% => OK
Paragraph topic coherence SD: 0.0733577233533 0.0628817314937 117% => OK
Essay readability:
automated_readability_index: 12.0 14.3799401198 83% => Automated_readability_index is low.
flesch_reading_ease: 57.61 48.3550499002 119% => OK
smog_index: 3.1 7.1628742515 43% => Smog_index is low.
flesch_kincaid_grade: 10.7 12.197005988 88% => OK
coleman_liau_index: 10.39 12.5979740519 82% => OK
dale_chall_readability_score: 7.55 8.32208582834 91% => OK
difficult_words: 80.0 98.500998004 81% => More difficult words wanted.
linsear_write_formula: 11.0 12.3882235529 89% => OK
gunning_fog: 10.8 11.1389221557 97% => OK
text_standard: 11.0 11.9071856287 92% => OK
What are above readability scores?
---------------------
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.