QUANTUM MECHANICS 101

Richard Feynman said about 50 years ago: “I think I can safely say that nobody understands quantum mechanics.” Is that still the case?

I think that is the case as long as we interpret what he says in a certain way. What is absolutely the case is that physicists don't agree about quantum mechanics. Even if one physicist does understand it, nobody else thinks that they understand it. As a field I would say it's safe to say that physicists don't claim to understand quantum mechanics.

Did you write the book to make quantum mechanics more accessible, or was it to outline that there are issues and call for new physics?

I definitely didn't want to just outline the issues. I wanted to present the plausible way forward based on [Hugh] Everett’s ‘many-worlds’ version of quantum mechanics, while also arguing that even if that approach is wrong, it's still very important that we have an approach, that we don’t just wallow in the mystery of quantum mechanics and that we stop just saying: “Wow. It's weird. It's spooky. It'll never be understood” and try to bring it into the realm of