Is He Cheating on You? 829 Telltale Signs

Came across a book today while traveling the world-wide web called Is He Cheating on You? 829 Telltale Signs by Ruth Houston.
829 signs? Really? Is there anything left that a man can do to indicate he’s NOT cheating?
I managed to find the first 17 pages online (as well as a bunch of people singing this book’s praises on Amazon) and to me it sounded like a whole whack of dysfunction.
829 seems like an awful lot of signs.
And, if you’re spending all your time trying to detect these 829 things, as well as recording them all in a journal that you keep "under lock and key" (wish I was kidding, but that’s what the author recommends), you won’t really have any time to work on whatever it is that is creating both your rampant paranoia as well as his possible straying.
She says you shouldn’t ask him straight out; that you should build your evidence first before confronting him (and this makes sense to a degree). However, to do this (build your evidence), you must perform a number of private-dick type tasks (including: “Smell his person”). She does warn that you shouldn’t endanger yourself or your children when “investigating”. Good tip.
My feeling is this: If you have purchased a book like this and you are doing any kind of investigating of your partner, your trust is clearly already shot. Whether he’s cheating or not, you’re going to need some kind of professional help or at least some serious soul-searching.