Very often there are two answers to exactly the same problem which a novice would not have the experience to differentiate.
探索过程中你会发现，针对同一个问题，往往会有两个完全不同的答案，而初学者往往没有经验对区分二者的差别。
Between these two extremes there are the questions for which the answers are invariant under change of dimension, but the techniques are not.
在这两个极端之间还有这样的问题，当维数改变时它们的解答不变，但（证明的）技巧则不然。
Between these two extremes there are the questions for which the answers are invariant under change of dimension, but the techniques are not.
在这两个极端之间还有这样的问题，当维数改变时它们的解答不变，但（证明的）技巧则不然。
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