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."
The author of a letter to the editor of a national aeronautics magazine argues that we should not invest in manned, but in unmanned space projects. He supports his argument by referring to the recent success of unmanned space missions and that it has less costs and risks compared to manned space flights. The argument seems convincing when it is given a cursory reading, but an in-depth analysis reveals several fallacies that have rendered the argument as indefensible.
First, one major flaw in the given argument is that the arguer assumes that manned space flights could be substituted by unma...
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Sentence: Satellites and probes cannot fulfil the job astronauts do.
Error: fulfil Suggestion: fulfill
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Attribute Value Ideal
Score: 5.5 out of 6
Category: Excellent Excellent
No. of Grammatical Errors: 0 2
No. of Spelling Errors: 1 2
No. of Sentences: 25 15
No. of Words: 429 350
No. of Characters: 2162 1500
No. of Different Words: 209 200
Fourth Root of Number of Words: 4.551 4.7
Average Word Length: 5.04 4.6
Word Length SD: 2.58 2.4
No. of Words greater than 5 chars: 170 100
No. of Words greater than 6 chars: 125 80
No. of Words greater than 7 chars: 82 40
No. of Words greater than 8 chars: 40 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 17.16 21.0
Sentence Length SD: 7.524 7.5
Use of Discourse Markers (%): 0.48 0.12
Sentence-Text Coherence: 0.285 0.35
Sentence-Para Coherence: 0.473 0.50
Sentence-Sentence Coherence: 0.056 0.07
Number of Paragraphs: 5 5