mud doesn't get glovey, but this logic sure gets sloppy

In 1931, psychologists Winthrop and Luella Kellogg performed a cross-rearing study by bringing an infant chimpanzee into their home to raise alongside their infant son, Donald. The goal was to see if the chimpanzee would grow smarter by being raised alongside a human baby. They were looking for increases in human-like language and behaviors. What happened was the opposite. Donald began to mimic the chimpanzee's behaviors. He would grunt, bark, and try to walk on all fours. The parents ended the study after Donald’s language development came to a halt. It turns out, stupid is contagious. If you wear a white glove and dip your hand into a puddle of mud, the glove gets muddy. The mud doesn’t get glovey. Do you understand?