So when the woman saw that the tree was good for food, and that it was a delight to the eyes, and that the tree was to be desired to make one wise, she took of its fruit and ate, and she also gave some to her husband who was with her, and he ate.
—Genesis 3:6 (ESV), emphasis mine

So if Adam was there the whole time, listening to the conversation between Eve and the snake, why does Eve usually get all the blame?