Here is another example of a simple error of omission that could have been caught if the student had read the essay aloud or given it to a friend to read. The word "of" should be between "calculation" and "the." That one small error makes the entire sentence awkward and confusing. If the instructor has to reread the sentence to try to understand its meaning, the flow of the essay is interrupted. If this happens often enough in the essay, it gives an overall bad impression on what otherwise might be a very good paper in terms of research.
In fairness, America’s bellicose intellectuals are not alone. In Europe, Adam Michnik, the hero of the Polish intellectual resistance to Communism, has become an outspoken admirer of the embarrassingly Islamophobic Oriana Fallaci; Václav Havel has joined the DC-based Committee on the Present Danger (a recycled Cold War-era organisation dedicated to rooting out Communists, now pledged to fighting ‘the threat posed by global radical Islamist and fascist terrorist movements’); André Glucksmann in Paris contributes agitated essays to Le Figaro (most recently on 8 August) lambasting ‘universal Jihad’, Iranian ‘lust for power’ and radical Islam’s strategy of ‘green subversion’. All three enthusiastically supported the invasion of Iraq.