This question is making me learn a bit of Physics too:-)
The six aspects are continuity,conservation, relativity,reversibility, mirror invariance and change minimization.
But the question is only to bring home the point of parallelism...so I guess the other 3 are not given.
But, I wonder ,to make it more meaningful and avoid ambiguity, the sentence can further be changed. But can we change the question?
pbehara But can we change the question? Suppose your professor gives you a test. " What would the professor answer?
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pbehara But can we change the question?
Suppose your professor gives you a test. You sit down to take the test, read the questions over and go up to the professor and say "Can you change questions number 6 and 8?"
What would the professor answer?