For example, when you see illustrations of primates being pictured as evolving into humans, it can be shown in a court of law that such a premise is impossible, because certain human and primate traits are different, and could not have ever been shared.
"Whatever a gorilla mom would do with her baby is what we have to do with this baby, " said Ron Evans, the zoo's primate team leader and one of Gladys' human surrogates.