Free Will - Yes/No?

[Edwardo Piet]

*What happens in the next second is dependent on what has happened in the previous second.
[...]
* I.e, the future is dependent on everything that has happened in the past.
[...]
*The future is dependent on the past that we were not a part of, I.e, before we were born.

I'd describe this all as different examples of premise 1:

P1. Causality implies by definition that past actions follow the future.

I'd say that's indeed true by definition, a tautologically 100% sound premise, true by definition.

*I.e, we have no control over the future.

I.e., premise 2:

P2. Causality exists.

I agree with the premise that causality exists, and whilst not tautological/true by definition, it is very sound and reasonable. I think we can all agree that not believing in cause and effect is rather silly.

What do you think of my argument?
I'd appreciate if Hammy could also give him opinion.

I'd say it's less of a valid argument and more like two sound premises, my question is, what is your conclusion? Do you conclude from these premises that free will doesn't exist? I make that conclusion.

I'd make the conclusion:

C. Therefore free will doesn't exist

If that is your conclusion I'd say it's a valid argument, as well as having sound premises, and therefore fully sound. It lacks validity without a conclusion, just as it would lack soundness without sound premises, but to be a fully sound sound argument would require both sound premises and a valid conclusion from those sound premises ("soundness" means both "the combination of sound premises and a valid argument" and also just the sound premises themselves, it has two meanings, which can be confusing, I know, lol).

-Hammy

ETA: There is another implict premise omitted too for me to complete the argument:

If causality exists free will cannot exist

So I'd make the full argument:

P1. Causality implies by definition that past actions follow the future.
P2. If causality exists free will cannot exist.
P3. Causality exists.
C. Therefore free will does not exist.

-Hammy