I have many confused customers.
One man returned an item because it was "torn" when he bought it. Then he discovered that it was the wrong item and he wasn't sure which the right item was. He wanted to open packages until he found the one that he usually buys. I let him open a couple but then told him that I couldn't let him open all of the packages because no one will buy them once they've been open. (He had NO IDEA which of the 20~30 items he was looking for.)
But really, manufacturers, please listen: See-through packages! They're the thing of the future! Or a picture of the item on the outside of the package! That would work, too. Help make many lives easier by making everyone less confused!