The material moves at such speeds that there is little to no inherit understanding. It's as though the creator expects the student to understand things like :
-(-(-(-2))) == -2 and 4 >= 16**0.5
I mean seriously this is going from 0 to 100 instantly with zero explanation and a mass of confusion. I personally like logic that can be understood easily and feel that I am not alone by the great number of help posts referring to ambiguity.
Providing the actual real answer can help tremendously speed up the learning process by providing a factual way to reverse engineer whats expected of the student.
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