Full Idea
Quantum Theory does not describe things as they are: it describes how things occur and interact with each other. It doesn't describe where there is a particle but how it shows itself to others. The world of existence is reduced to possible interactions.
Gist of Idea
Quantum Theory describes events and possible interactions - not how things are
Source
Carlo Rovelli (Reality is Not What it Seems [2014], 04)
A Reaction
Fans of 'process philosophy' should like this, though he is not denying that there may be facts about how things are - it is just that this is not mentioned in the theory. There is not much point in philosophers yearning to know the reality.
Book Reference
Rovelli,Carlo: 'Reality is Not What it Seems', ed/tr. Carnell/Segre [Penguin 2016], p.115