So apparently the media is blasting Jim Carrey for his tweeting about "Elin had to know Tiger was a cheater" (paraphrased)... and he's right.
In my opinion, if a wife is paying attention to the needs of her husband she'll know when something is amiss. And for the amount of cheating Tiger did... Elin had to know. Or maybe she knew just enough not to care?! Not to pay attention?!