"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."
In the letter, the writer has stated that manned space flight is costly & dangerous and thus, they should invest their resources in unmanned space flight.However, the evidence provided by him is very vague and at least 3 assumptions made by him must be justified.
According to him, manned space flight is costly and dangerous.No justification,proof or data for this argument bas been provided by him.Maybe only some of the manned mission might be costlier than unmanned ones.Further, the cost depends on the type of mission and resources used.Manned mission to moon might be cheaper than unmanned mission to moon.Manned mission to mars might be costlier than unmanned mission to mars.The cost of machinery for unmanned mission might be much higher and may use more resources.Proper analysis is required to justify this statement and more data about the cost & resources of the missions must be provided.
The writer only talks about the recent success of unmanned probes & satellites.The writer has assumed that due to the recent success, future missions will also be as successful.The missions might be successful because the technology for automated machinery has been improved and thus, unmanned satellites work better now.If all the missions throughout the history were to be considered, it may happen that manned missions were more successful than unmanned missions.Future unmanned missions might not be as successful as they are now.
The writer has assumed that the weight of information gained through unmanned missions is more than the risk of manned missions.It may happen for some unmanned missions that cost & resources of it is more than the information gained through it.Inversely, the information gained through manned mission might be more useful and greater than the risk involved in it.Every mission is different whether manned or unmanned and the risk & information gain of it must be calculated effectively without assuming anything.
If any of the above assumptions remian unjustified, they could seriously undermine the argument.If the writer is able to provide more concrete evidence and statistical data, his argument could be evaluated properly.
Comments
Essay evaluation report
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: 8 15
No. of Words: 354 350
No. of Characters: 1788 1500
No. of Different Words: 145 200
Fourth Root of Number of Words: 4.338 4.7
Average Word Length: 5.051 4.6
Word Length SD: 2.563 2.4
No. of Words greater than 5 chars: 144 100
No. of Words greater than 6 chars: 105 80
No. of Words greater than 7 chars: 78 40
No. of Words greater than 8 chars: 38 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 44.25 21.0
Sentence Length SD: 31.168 7.5
Use of Discourse Markers (%): 0.625 0.12
Sentence-Text Coherence: 0.402 0.35
Sentence-Para Coherence: 0.72 0.50
Sentence-Sentence Coherence: 0.097 0.07
Number of Paragraphs: 5 5
Grammar and spelling errors:
Line 1, column 155, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: However
...heir resources in unmanned space flight.However, the evidence provided by him is very v...
^^^^^^^
Line 3, column 63, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: No
...ed space flight is costly and dangerous.No justification,proof or data for this ar...
^^
Line 3, column 79, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , proof
...is costly and dangerous.No justification,proof or data for this argument bas been prov...
^^^^^^
Line 3, column 137, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Maybe
... this argument bas been provided by him.Maybe only some of the manned mission might b...
^^^^^
Line 3, column 148, Rule ID: SOME_OF_THE[1]
Message: Simply use 'some'.
Suggestion: some
...ent bas been provided by him.Maybe only some of the manned mission might be costlier than u...
^^^^^^^^^^^
Line 3, column 212, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Further
...on might be costlier than unmanned ones.Further, the cost depends on the type of missio...
^^^^^^^
Line 3, column 280, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Manned
... the type of mission and resources used.Manned mission to moon might be cheaper than u...
^^^^^^
Line 3, column 350, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Manned
...e cheaper than unmanned mission to moon.Manned mission to mars might be costlier than ...
^^^^^^
Line 3, column 421, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: The
... costlier than unmanned mission to mars.The cost of machinery for unmanned mission ...
^^^
Line 3, column 512, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Proper
... much higher and may use more resources.Proper analysis is required to justify this st...
^^^^^^
Line 5, column 80, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: The
...success of unmanned probes & satellites.The writer has assumed that due to the rece...
^^^
Line 5, column 178, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: The
...ure missions will also be as successful.The missions might be successful because th...
^^^
Line 5, column 178, 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.
...ure missions will also be as successful.The missions might be successful because th...
^^^
Line 5, column 322, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: If
...us, unmanned satellites work better now.If all the missions throughout the history...
^^
Line 5, column 467, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Future
... more successful than unmanned missions.Future unmanned missions might not be as succe...
^^^^^^
Line 7, column 129, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: It
...s more than the risk of manned missions.It may happen for some unmanned missions t...
^^
Line 7, column 245, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Inversely
... than the information gained through it.Inversely, the information gained through manned ...
^^^^^^^^^
Line 7, column 364, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Every
...nd greater than the risk involved in it.Every mission is different whether manned or ...
^^^^^
Line 9, column 97, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: If
... could seriously undermine the argument.If the writer is able to provide more conc...
^^
Transition Words or Phrases used:
also, however, if, may, so, thus, at least
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 26.0 19.6327345309 132% => OK
Auxiliary verbs: 17.0 12.9520958084 131% => OK
Conjunction : 12.0 11.1786427146 107% => OK
Relative clauses : 5.0 13.6137724551 37% => More relative clauses wanted.
Pronoun: 22.0 28.8173652695 76% => OK
Preposition: 35.0 55.5748502994 63% => OK
Nominalization: 11.0 16.3942115768 67% => OK
Performance on vocabulary words:
No of characters: 1841.0 2260.96107784 81% => OK
No of words: 337.0 441.139720559 76% => More content wanted.
Chars per words: 5.46290801187 5.12650576532 107% => OK
Fourth root words length: 4.28457229495 4.56307096286 94% => OK
Word Length SD: 3.04673872749 2.78398813304 109% => OK
Unique words: 151.0 204.123752495 74% => More unique words wanted.
Unique words percentage: 0.448071216617 0.468620217663 96% => OK
syllable_count: 562.5 705.55239521 80% => OK
avg_syllables_per_word: 1.7 1.59920159681 106% => 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: 2.0 4.22255489022 47% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 5.0 19.7664670659 25% => 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: 67.0 22.8473053892 293% => The Avg. Sentence Length is relatively long.
Sentence length SD: 164.499969605 57.8364921388 284% => The lengths of sentences changed so frequently.
Chars per sentence: 368.2 119.503703932 308% => Less chars_per_sentence wanted.
Words per sentence: 67.4 23.324526521 289% => Less words per sentence wanted.
Discourse Markers: 8.4 5.70786347227 147% => OK
Paragraphs: 5.0 5.15768463074 97% => OK
Language errors: 19.0 5.25449101796 362% => Less language errors wanted.
Sentences with positive sentiment : 2.0 8.20758483034 24% => More positive sentences wanted.
Sentences with negative sentiment : 3.0 6.88822355289 44% => More negative sentences wanted.
Sentences with neutral sentiment: 0.0 4.67664670659 0% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.255714409096 0.218282227539 117% => OK
Sentence topic coherence: 0.147263277295 0.0743258471296 198% => OK
Sentence topic coherence SD: 0.0662740315469 0.0701772020484 94% => OK
Paragraph topic coherence: 0.147263277295 0.128457276422 115% => OK
Paragraph topic coherence SD: 0.0662740315469 0.0628817314937 105% => OK
Essay readability:
automated_readability_index: 38.0 14.3799401198 264% => Automated_readability_index is high.
flesch_reading_ease: -4.99 48.3550499002 -10% => Flesch_reading_ease is low.
smog_index: 15.9 7.1628742515 222% => Smog_index is high.
flesch_kincaid_grade: 30.6 12.197005988 251% => Flesch kincaid grade is high.
coleman_liau_index: 15.57 12.5979740519 124% => OK
dale_chall_readability_score: 10.43 8.32208582834 125% => OK
difficult_words: 74.0 98.500998004 75% => More difficult words wanted.
linsear_write_formula: 28.0 12.3882235529 226% => Linsear_write_formula is high.
gunning_fog: 28.8 11.1389221557 259% => Gunning_fog is high.
text_standard: 16.0 11.9071856287 134% => OK
What are above readability scores?
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Rates: 50.0 out of 100
Scores by essay e-grader: 3.0 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.