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

According to the argument provided , that manned space flight is costly and dangerous and the unmanned space probes and satellites can also get us the data without costs and risks involved. Due to these reasons we should invest our resources in unmanned space flight. At the first glance the argument seems valid but it is actually unpersuasive as it is based on assumptions and has no evidence for the same.
Firstly, "manned space flight is costly and dangerous" was this statement given out on the basis of any study. It assumes that manned space flight were launched. If yes, this launch was costly and dangerous, what is the proof about that , were there any comparisons done with unmanned space flight. If yes , who did the study and what all features were considered and assumed in that study. Did people lost their lives or were hurt during any manned space flight mission ?
Speaking of cost , what is the difference between the overall cost of manned and unmanned space flight? Data collected when a manned space flight was launched versus unmanned space flight needs a comparison. There might be the case manned space flight will collect more appropriate and valid data. This data doesn't have to go through several validations as a human itself is a proof for that data while if unmanned space crafts brings the data several data validation cost needs to be taken into account.
Argument is assuming that unmanned space flight will definitely get data as accurate as the manned space flight which ofcourse might differ. Danger is always involved doesn't matter if the space flight is manned or unmanned but ofcourse for a manned space flight precautions needs to be taken.
For unmanned space flight if the space flight loses the communication from base or hits some asteroids then it is almost impossible to revive the mission but if the space flight are driven by astronauts in it who can help to avoid these communication issues and even dodge the asteroids coming in our way hence chances of mission to be successful are higher in the second case where we have manned space flight.
We should surely invest resources in unmanned space flight but for initial stages. To have advancements in space history we will eventually have to develop best manned space flight. I agree cost might be high along with risk involved but even if we don't get desired results we need to live by the quote "Try try till you succeed". One small failure will open 100 new opportunity to learn and be better.
Conclusion, report will be helpful that supports the statement, manned space flight is costly and dangerous, answering above questions. Need to consider that the data validation and verification methods will also involve costs which will be pretty high for the data collect from unmanned space crafts. Supporting evidences needed saying that data is equally accurate that is coming from both the space flights. Advancements in science and space history is necessary for any country to make their position strong all over the world.

Votes
Average: 8.3 (2 votes)
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Grammar and spelling errors:
Line 1, column 35, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
According to the argument provided , that manned space flight is costly and ...
^^
Line 2, column 65, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ace flight is costly and dangerous' was this statement given out on the basi...
^^
Line 2, column 247, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
... dangerous, what is the proof about that , were there any comparisons done with un...
^^
Line 2, column 316, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
... done with unmanned space flight. If yes , who did the study and what all features...
^^
Line 3, column 17, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...space flight mission ? Speaking of cost , what is the difference between the over...
^^
Line 3, column 308, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: doesn't
...e appropriate and valid data. This data doesnt have to go through several validations ...
^^^^^^
Line 4, column 167, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: doesn't
...might differ. Danger is always involved doesnt matter if the space flight is manned or...
^^^^^^
Line 6, column 249, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...along with risk involved but even if we dont get desired results we need to live by ...
^^^^
Line 6, column 309, Rule ID: ENGLISH_WORD_REPEAT_RULE
Message: Possible typo: you repeated a word
Suggestion: Try
...ults we need to live by the quote 'Try try till you succeed'. One small failu...
^^^^^^^

Transition Words or Phrases used:
actually, also, but, first, firstly, hence, if, second, so, then, while, speaking of

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on Part of Speech:
To be verbs : 32.0 19.5258426966 164% => OK
Auxiliary verbs: 16.0 12.4196629213 129% => OK
Conjunction : 24.0 14.8657303371 161% => OK
Relative clauses : 16.0 11.3162921348 141% => OK
Pronoun: 34.0 33.0505617978 103% => OK
Preposition: 46.0 58.6224719101 78% => OK
Nominalization: 14.0 12.9106741573 108% => OK

Performance on vocabulary words:
No of characters: 2542.0 2235.4752809 114% => OK
No of words: 512.0 442.535393258 116% => OK
Chars per words: 4.96484375 5.05705443957 98% => OK
Fourth root words length: 4.75682846001 4.55969084622 104% => OK
Word Length SD: 2.52306533354 2.79657885939 90% => OK
Unique words: 235.0 215.323595506 109% => OK
Unique words percentage: 0.458984375 0.4932671777 93% => More unique words wanted or less content wanted.
syllable_count: 787.5 704.065955056 112% => OK
avg_syllables_per_word: 1.5 1.59117977528 94% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 6.0 6.24550561798 96% => OK
Article: 0.0 4.99550561798 0% => OK
Subordination: 2.0 3.10617977528 64% => OK
Conjunction: 0.0 1.77640449438 0% => OK
Preposition: 3.0 4.38483146067 68% => OK

Performance on sentences:
How many sentences: 23.0 20.2370786517 114% => OK
Sentence length: 22.0 23.0359550562 96% => OK
Sentence length SD: 70.5936747784 60.3974514979 117% => OK
Chars per sentence: 110.52173913 118.986275619 93% => OK
Words per sentence: 22.2608695652 23.4991977007 95% => OK
Discourse Markers: 3.65217391304 5.21951772744 70% => OK
Paragraphs: 7.0 4.97078651685 141% => Less paragraphs wanted.
Language errors: 9.0 7.80617977528 115% => OK
Sentences with positive sentiment : 12.0 10.2758426966 117% => OK
Sentences with negative sentiment : 7.0 5.13820224719 136% => OK
Sentences with neutral sentiment: 4.0 4.83258426966 83% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.378974061957 0.243740707755 155% => OK
Sentence topic coherence: 0.148119910399 0.0831039109588 178% => OK
Sentence topic coherence SD: 0.0973729018454 0.0758088955206 128% => OK
Paragraph topic coherence: 0.233025251235 0.150359130593 155% => OK
Paragraph topic coherence SD: 0.047571296061 0.0667264976115 71% => OK

Essay readability:
automated_readability_index: 13.1 14.1392134831 93% => Automated_readability_index is low.
flesch_reading_ease: 57.61 48.8420337079 118% => OK
smog_index: 3.1 7.92365168539 39% => Smog_index is low.
flesch_kincaid_grade: 10.7 12.1743820225 88% => OK
coleman_liau_index: 11.78 12.1639044944 97% => OK
dale_chall_readability_score: 7.66 8.38706741573 91% => OK
difficult_words: 95.0 100.480337079 95% => OK
linsear_write_formula: 11.0 11.8971910112 92% => OK
gunning_fog: 10.8 11.2143820225 96% => OK
text_standard: 11.0 11.7820224719 93% => OK
What are above readability scores?

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Maximum six paragraphs wanted.

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.