Comment by l33tman

QFT is the most well-tested physics theory mankind has developed and certainly is not a "haze" as the pop-sci articles write.

What they mean by the "haze of probabilities" is that you need to iterate over all possible configurations of the gluons and quarks in the proton to produce experimental predictions.

It is for sure computationally ludicrous, but conceptually it's really not better or worse than to say that particles are billiard balls moving around by Newton's Equations. You're just more used to the latter, but spend some time working with for example Lattice QCD and you get completely used to the former being the "actual" underlying physics rules.