Can’t they read?

I was just reading an article on the Time.com website that a daycare staffer took a container that had fluid in it that looked like blue Kool-Aid from the refrigerator and served it to several young children in the daycare center.  The children were hospitalized because the fluid was actually windshield wiper fluid!  I’m totally shocked – how and why did the stuff end up in the refrigerator?  Can’t the person who was putting away groceries read?  I understand that the fluid is blue, but there would have been pictures on the container to reflect that it was NOT Kool-Aid!  Probably pictures of a car and windshield wipers!  I understand that the lady who ran the daycare center has surrendered her daycare license, and the kids should be okay; it’s just a terrible shame!  A senseless error, thank goodness no one died!