[evanb]

> The path integral really shouldn't be taken too literally. It's not reality, it's just an equation.

While it's always important to point out that the current paradigm might be overthrown tomorrow, it is ALSO important to understand different ways of describing what the current paradigm says!

The "bizarre" trajectories that contribute to the path integral are not optional; they're really there and you can arrange interference experiments to make their physical importance clear.