You are saying we wake up just to survive ("finding food and shelter"), but it's right in the article: “The cost of losing consciousness to survival is astrono

You are saying we wake up just to survive ("finding food and shelter"), but it's right in the article: “The cost of losing consciousness to survival is astronomical,” "This means we can confidently reject one of the simplest theories of sleep: that we drift off simply because we have nothing better to do."