See? “By” originally means “bye” or byway. That’s why, in fact, some people still spell “by the by” as “by the bye”. By the way, “that is by the by or bye” in this sense (secondary) is an idiom that ...

萨姆·奥尔特曼最近宣称，OpenAI已经知道如何构建通用人工智能（AGI），这再次引发了有关AI未来的辩论。虽然这些主张频频登上媒体头条，但作为一名研究人脑工作原理超过十年的神经科学家，我发现自己关注的是一个不同的悖论：对现代AI系统最常见的批评之一 ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.