Jane Goodall Bars

Monkeys have been in the news lately. Here's my favorite monkey story: once a researcher was going to test the intelligence of a chimpanzee by putting the subject in an empty room with assorted boxes in a pile and a banana hanging from the ceiling by a string. The scientist was about to retreat to an observation space and watch through the mirror in order to determine how long it took his subject to stack the boxes and take the food.