7版的魔法书只有一个san,反而是克苏鲁神话会写为3%/8%这样,对应的是泛读/精读。
6版不清楚
恰好,6版的设定是完全相反的。
6版神话书籍的san损失分为两项,而cm增加值只有一项。
具体参见下文(6th原版规则书P93):
Skimming A Mythos Book An investigator can skim a book to learn what it is about and to guess at what spells it might contain. Skimming always succeeds if the language can be read.
Skimming a printed or typescript book takes one hour per hundred pages. Skimming a handwritten manuscript takes one hour per ten pages.
Skimming a Mythos book costs half the current Sanity points needed to read the book, or as the keeper indicates.(速读一本神话书籍造成的san损失是通读的一半,或者是KP决定的数值;
Skimming never increases Cthulhu Mythos.
速读从不增加CM;
After skimming, reading the book costs the full Sanitypoint roll, minus any Sanity points actually spent in skimming the book.
在速读之后,阅读这本书籍所造成的san损失需按全额掷骰,然后减去在速读时实际扣除的san值。
上文不但指出速读和通读的san损失不同,还具体说明了具体的差别,即速读是通读的一半。
下图是用于记录神话书籍信息的sheet,也很明确:

结论来说,LZ得到的这条信息,在6版而言是完全正确的。