https://medium.com/@NautilusMag/why-is-the-human-brain-so-efficient-4de2820f9b54

Photo: GraphicaArtis/Getty ImagesBy Liqun Luo

The brain is complex; in humans it consists of about 100 billion neurons, making on the order of 100 trillion connections. It is often compared with another complex system that has enormous problem-solving power: the digital computer. Both the…