It can be made to work in at least some cases -- for example, QED is a theory about how individual photons and electrons behave that’s in truly fantastic agreem

It can be made to work in at least some cases -- for example, QED is a theory about how individual photons and electrons behave that’s in truly fantastic agreement with experimental results. There’s a deep philosophical question about whether we can every truly learn the real fundamental laws of nature, sure; but it certainly looks like we can get very very close, perhaps arbitrarily close.