Dipped into my copy of What To Expect In The First Year the other day (bought as a present before I had DS1).
I'd forgotten how much of it is just vile.
Apparently a seven-month-old is already "an expert mummy-manipulator".
If "the crying" of your trying to be sleep trained six-month-old gets too much, turn the baby monitor off.
And my current favourite - lots of references to "primitive societies" doing such terrible baby-spoiling things as wearing them in slings.