You could look for certain tell tale signs as under which should alert you of the possible wrong intentions of the person at the other end. (freeonlinedatingsite.org)
That said, there are also welcome signs in the book that Cumming recognises that certain wrong intentions can not be so readily imputed in some cases where the moral verdict is, however, clear. (faith.org.uk)
Third criticism: FALSE, there is no other publically available contemporary data on voting intention in the London Assembly to compare this too, and no reason to think it wrong (ukpollingreport.co.uk)