'Know' in the Bible

Jonah told them, "Pick me up and toss me into the sea. Then the sea will calm down for you, because I know that it's my fault that this mighty storm has come upon you."

So why shouldn't I be concerned about Nineveh, that great city, in which there are more than 120,000 human beings who do not know their right hand from their left, as well as a lot of livestock?