Slow as a snail? No, efficient as a snail is more accurate. Researchers can use the snail's brain as a reference to build smarter robots. The snail's resourceful thinking involves only two neurons to make decisions, one to know their status (I'm hungry) and the other to know if there's food close by – as opposed to 86 billion neurons in the human brain. Making tougher decisions optimally with less energy, like a snail, could be key to intelligent robots.