A simple consequence argument

Say that p and q are nomically equivalent provided that the laws of nature entail that p holds if and only if q does.

Assume:

1. If q is not up to you, and p is nomically equivalent to q, then p is not up to you.

Suppose determinism. Let L be the laws. Let t₀ be 1000 years ago. Let p be a proposition reporting something you do. Let q be the disjunction of all the nomically possible states of the universe at t₀ that evolve under L in such a way as to make p true. Then, plausibly:

2. p and q are nomically equivalent.

For given the deterministic laws, if p is true, then a thousand years ago the universe must have been such as to have to evolve to make p true.[note 1] And conversely, the laws entail that if it was such, then p is true.

Finally, observe that events a thousand years ago aren't up to you:

3. q is not up to you.

We conclude that p is not up to you. So no actions are up to you if determinism holds.