It's not uneducated to use Occam's razor: if someone tests as not being the mother, they almost always are not the mother. This is an every day occurrence.
Chimerism is a possible explanation but vanishingly unlikely. Two identified cases, ever (i.e. none before this).
Chimerism is a possible explanation but vanishingly unlikely. Two identified cases, ever (i.e. none before this).
This is news because it's exceptional.