Award four stars to I Don't Know How She Does It, because Daily Telegraph film critic Sarah Crompton finds Sarah Jessica Parker's latest performance an "understated joy" in a bestseller-based movie that shows how "women can adore their job and their family".

Or award it one shrinking star in the Daily Mail, because Chris Tookey deems its "having it all" plot not of its time. Has a "book ever dated more quickly?", he wonders.

Who wrote this creaky, derided tome? "Former Mail columnist Allison Pearson", Tookey helpfully reminds us, before she went back to the Telegraph. I don't know how they do it, either. But there's a slip showing somewhere.