Having read Three Roads to Quantum Gravity, I think there's a lot of substance there. It's a book made to even include high schoolers, so you have to give it some benefit of the doubt.
As per the philosophy question, neither classical mechanics, relativity, or even death cares about what we think. What matters here is how we perceive and understand a concept.
As per the philosophy question, neither classical mechanics, relativity, or even death cares about what we think. What matters here is how we perceive and understand a concept.