[losteric]

Determinism is an interesting question... we exist at a fascinating scale, in between lower orders significantly influenced by non-deterministic forces and higher orders where determinism seems to prevails.

The chemical reactions driving cellular machinery is influenced by quantum randomness, while astronomical scales seem to be entirely deterministic (though chaotic). For example, radioactive decay influences both DNA replication and planetary orbits (via heat-driven plate tectonics)... but it seems that any randomness is washed out by the sheer volume of matter at the planetary scale.

We sit right in between those orders. Our bodies are an interconnected web of non-deterministic cells cooperating to maintain higher-level order and some approximation of determinism. Obviously I can't say with certainty, but I find free will to be more likely than not.