The short answer: Even the best texts (Sakurai for theory, Beck for experiment, Gerry & Knight for quantum optics) have blind spots. However, if you are a student who learns by asking, “How would I actually measure that?” or an instructor tired of grading problem sets about infinite square wells that have no connection to reality, then Beck’s book is an essential companion.

One of the most celebrated sections of Beck’s PDF work is his treatment of Bell’s inequality. Many textbooks derive the CHSH inequality abstractly, then mention Aspect’s experiments in a closing paragraph. Beck instead:

“How would you actually measure the quantum state of a single photon in a lab?”