A single “theory of everything” exists. We just haven’t found it yet.
That’s one of the main arguments from theoretical physicist Stephen Hawking (1942-2018), as articulated in his 1988 bestselling book A Brief History of Time. The book helped make him one of his generation’s best known intellectuals, and he used an array of impressive technologies to help him continue to shape public thought during his long battle with ALS. It helped popularize many obscure and complex ideas.
Though he didn’t win a Nobel Prize in his lifetime and he occupied a kind of celebrity status, he did contribute meaningfully to his field. In 1974, in his early 30s, Hawking argued that black holes would emit heat energy, so-called Hawking radiation, which would mean that, unless they otherwise added mass, a black hole could eventually vanish. He helped us discover that black holes might not even be, you know, black. That work gave him needed pedigree to write this book, which is a relatively breezy read while also citing much of the most exciting ideas in theoretical physics and even cosmology.
As a hobbyist consumer of pop science, I’ve long wanted to read this text. Much of what he wrote about has been covered by an array of science Youtubers and writers I follow. Yet I still got much from the book. Do read it. Below I share my notes from the book for myself.Continue reading A Brief History of Time: Stephen Hawking’s 1988 classic theoretical physics book