I assume you're talking about "God does not play dice". Einstein's famous quote may yet be proven correct. Everettian theory (many-worlds interpretation), Bohmi

I assume you're talking about "God does not play dice". Einstein's famous quote may yet be proven correct. Everettian theory (many-worlds interpretation), Bohmian Mechanics, and Exotic Probability theory are all deterministic interpretations of quantum mechanics. My money is on Exotic Probability theory winning out, with a lower level physical theory (perhaps causal networks?), providing the exotic probabilities. Einstein was fully capable of discovering exotic probability theory, having contributed greatly to the development of bosonic statistics. Unfortunately, he did not, and we've been floundering about with string theory and the like ever since his famous quote.