Futurists have long talked about the day when computers become as powerful and versatile as the human brain. A recent simulation shows that day is not exactly imminent. In one of the most accurate simulations of the human brain to date, a Japanese supercomputer modeled one second of one percent of human brain activity, a task that took 40 minutes, according to The Telegraph. 

The simulation was carried out by Japan's K computer, the world's fourth most powerful supercomputer, and replicated a network consisting of 1.73 billion neurons.