[Pia]

Well i don't think their needs to be any more information, there is nothing different about them to anyone in the sense that they shouldn't have left their kids alone.
What does their history matter? They went for dinner every night and left the kids in the room alone, maybe it's true what i've thought about 'highly intelligent' people- they usually have no common sense. Or they've lived such a sheltered life they didn't think it would happen to them, that's a bad decision which caused poor parenting.

If you took your kid swimming without armbands- and it drowned because you weren't watching them would that be a bad decision or poor parenting? Not putting the armbands on is a bad decision, not watching them is poor parenting. Kind of similar if you ask me.