A fascinating new study from the Ngamba Island Chimpanzee Sanctuary in Uganda has revealed that chimpanzees may be capable of rational belief revision — a process once thought to be uniquely human. 🧠🐒 Researchers tested whether chimps could update their beliefs based on new evidence. The setup was simple: two boxes, one hiding a treat. The chimps received clues of varying strength — like hearing a rattle versus seeing the treat — and had to pick the right box. Then came the twist: they were gi