Do not present your opinion or interpretation of the question as a rational. Moreover, do not present the opinion of an author or confidant as these will result in non-acceptance of the challenge. I am interested in scientific substantiation of your answer only. If you convince me that your rationale is correct, I will award you two times the point value of the question you have challenged. However, if you turn in a challenge and I feel that your rationale is not scientifically substantiated, I will subtract two times the point value of the question.
Professional arguments are important if a field is to grow.
However, these disagreements should never be frivolous. Corrective action will not be retroactive at the time your need is presented so please see me before there is a problem. It is hoped that students have the type of commitment that is demanded by most professions and that this sense of responsibility will result in perfect attendance. However, certain course requirements cannot be met in absentia. There is one and only one situation under which a make up exam will be given, an excused absence from the particular exam.