If some women take this article seriously and feel up some man's penis by picking lint off his zip or whatever, its not even going to give an 'accurate reading'.
What if it's a little one that becomes a huge one when excited - thats a missed opportunity. Or horrors of horros one thats an impressive 5inches when slack but just stays the same dimensions only harder when excited.
Those cosmo 'writers' really need to put some more thought into these things.