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 opinion that claims unmanned space probes are better than the manned space flight is flawed and an unconvincing opinion. Human species are the most curious and creative thinkers alive on this planet. Scientists, theologists and many other people working at space department are the risk takers. If it was not for them we would still not be knowing that there aare other planets in the solar system,information regarding the mily way galaxy. Risks are involved. but there are tasks where an unmanned probe is not suited to go.
The letter doesn't mention how recent is the success rate. maybe its of few years back or maybe its of this year. It is possible that the recent success the letter speaks about had more unmanned misssions than manned so out of how many missions the success rate has been calculated is also not mentioned.
The person writing the letter is basing his arguments on just the recent success rate and not taking the total success rate of the manned and unmanned space probes into evaluation. Maybe the succes rate of manned have been more than the unmanned but maybe in this year more unmanned missions have been successful.
The letter here is also making a consideration that the cost of a manned space flight is more than the unmanned probe so it is easy to gather information. The letter isn't taking into consideration whether the missions that were manned can be made into unmanned space probes. If yes then only their is benefit in investing in unmanned space flight.
Therefore, i will like to conclude that the argument about the letter to the editor of national aeronautics magazine is flawed and unconvincing and requires so many considerations.
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Comments
Essay evaluation report
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: 13 15
No. of Words: 290 350
No. of Characters: 1372 1500
No. of Different Words: 144 200
Fourth Root of Number of Words: 4.127 4.7
Average Word Length: 4.731 4.6
Word Length SD: 2.43 2.4
No. of Words greater than 5 chars: 97 100
No. of Words greater than 6 chars: 57 80
No. of Words greater than 7 chars: 41 40
No. of Words greater than 8 chars: 20 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 22.308 21.0
Sentence Length SD: 6.695 7.5
Use of Discourse Markers (%): 0.538 0.12
Sentence-Text Coherence: 0.374 0.35
Sentence-Para Coherence: 0.64 0.50
Sentence-Sentence Coherence: 0.122 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 1, column 342, Rule ID: PROGRESSIVE_VERBS[1]
Message: This verb is normally not used in the progressive form. Try a simple form instead.
... it was not for them we would still not be knowing that there aare other planets in the so...
^^^^^^^^^^
Line 1, column 402, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , information
...e aare other planets in the solar system,information regarding the mily way galaxy. Risks ar...
^^^^^^^^^^^^
Line 1, column 466, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: But
...he mily way galaxy. Risks are involved. but there are tasks where an unmanned probe...
^^^
Line 5, column 12, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: doesn't
...be is not suited to go. The letter doesnt mention how recent is the success rate....
^^^^^^
Line 5, column 59, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: Maybe
...mention how recent is the success rate. maybe its of few years back or maybe its of t...
^^^^^
Line 5, column 96, Rule ID: IT_IS[6]
Message: Did you mean 'it's' (='it is') instead of 'its' (possessive pronoun)?
Suggestion: it's; it is
...e. maybe its of few years back or maybe its of this year. It is possible that the r...
^^^
Line 11, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...manned missions have been successful. The letter here is also making a conside...
^^^^
Line 13, column 167, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: isn't
... easy to gather information. The letter isnt taking into consideration whether the m...
^^^^
Line 13, column 276, 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.
...can be made into unmanned space probes. If yes then only their is benefit in inves...
^^
Line 13, column 293, Rule ID: THEIR_IS[1]
Message: Did you mean 'there'?
Suggestion: there
...unmanned space probes. If yes then only their is benefit in investing in unmanned spa...
^^^^^
Line 17, column 12, Rule ID: I_LOWERCASE[2]
Message: Did you mean 'I'?
Suggestion: I
... unmanned space flight. Therefore, i will like to conclude that the argument...
^
Line 17, column 14, Rule ID: WILL_LIKE_TO[1]
Message: Did you mean 'would'?
Suggestion: would
...nmanned space flight. Therefore, i will like to conclude that the argument abou...
^^^^
Transition Words or Phrases used:
also, but, if, may, regarding, so, still, then, therefore
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 23.0 19.6327345309 117% => OK
Auxiliary verbs: 3.0 12.9520958084 23% => OK
Conjunction : 10.0 11.1786427146 89% => OK
Relative clauses : 7.0 13.6137724551 51% => More relative clauses wanted.
Pronoun: 19.0 28.8173652695 66% => OK
Preposition: 25.0 55.5748502994 45% => More preposition wanted.
Nominalization: 8.0 16.3942115768 49% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1414.0 2260.96107784 63% => OK
No of words: 287.0 441.139720559 65% => More content wanted.
Chars per words: 4.92682926829 5.12650576532 96% => OK
Fourth root words length: 4.11595363751 4.56307096286 90% => OK
Word Length SD: 2.59182865695 2.78398813304 93% => OK
Unique words: 145.0 204.123752495 71% => More unique words wanted.
Unique words percentage: 0.505226480836 0.468620217663 108% => OK
syllable_count: 442.8 705.55239521 63% => OK
avg_syllables_per_word: 1.5 1.59920159681 94% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 4.96107784431 40% => OK
Article: 5.0 8.76447105788 57% => OK
Subordination: 2.0 2.70958083832 74% => OK
Conjunction: 1.0 1.67365269461 60% => OK
Preposition: 0.0 4.22255489022 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 15.0 19.7664670659 76% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 19.0 22.8473053892 83% => The Avg. Sentence Length is relatively short.
Sentence length SD: 51.1066857988 57.8364921388 88% => OK
Chars per sentence: 94.2666666667 119.503703932 79% => OK
Words per sentence: 19.1333333333 23.324526521 82% => OK
Discourse Markers: 3.8 5.70786347227 67% => OK
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 12.0 5.25449101796 228% => Less language errors wanted.
Sentences with positive sentiment : 8.0 8.20758483034 97% => OK
Sentences with negative sentiment : 2.0 6.88822355289 29% => More negative sentences wanted.
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: 0.272703609479 0.218282227539 125% => OK
Sentence topic coherence: 0.0942333950756 0.0743258471296 127% => OK
Sentence topic coherence SD: 0.0719680324714 0.0701772020484 103% => OK
Paragraph topic coherence: 0.140914100261 0.128457276422 110% => OK
Paragraph topic coherence SD: 0.0934190325327 0.0628817314937 149% => OK
Essay readability:
automated_readability_index: 11.4 14.3799401198 79% => Automated_readability_index is low.
flesch_reading_ease: 60.65 48.3550499002 125% => OK
smog_index: 3.1 7.1628742515 43% => Smog_index is low.
flesch_kincaid_grade: 9.5 12.197005988 78% => OK
coleman_liau_index: 11.31 12.5979740519 90% => OK
dale_chall_readability_score: 7.55 8.32208582834 91% => OK
difficult_words: 54.0 98.500998004 55% => More difficult words wanted.
linsear_write_formula: 6.5 12.3882235529 52% => Linsear_write_formula is low.
gunning_fog: 9.6 11.1389221557 86% => OK
text_standard: 10.0 11.9071856287 84% => OK
What are above readability scores?
---------------------
Rates: 50.0 out of 100
Scores by essay e-grader: 3.0 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.