is there free will?

[Andres]

With determinism, your actions are merely predictable, not "externally directed".

Then the word determism is poorly chosen. Our actions are predictable (only to a certain extent, certainly if you look at the individual level), not determined.

That's fatalism.

Semantics.

The difference is not that big.

Determinism:

"I'm lazy, but so what, everything is determined anyway, so I can just as well be lazy."

[Sasaki Kojiro]

Then the word determism is poorly chosen. Our actions are predictable (to a certain extent, certainly if you look at the individual level), not determined.

They are predictable to the extent that they are determined. The idea being, that if there was some demon who understood perfectly the laws of nature, and had exact information about the world, he could predict exactly what choice you would make. If it was up to you entirely, then your actions wouldn't be predictable. If there is an element of randomness, then it isn't predictable either, but since randomness isn't choice it's generally best to just leave the complicated physics out of the discussion.

There would be no predictability without some level of determinism. Now we as people can't predict very well, but that's because we have a limited capacity. You can't predict where all the balls will go when you break on a pool table, but do you think that some thing that had more capability couldn't predict where each ball would end up, based on information about the cue ball?

Semantics.

The difference is not that big.

Determinism:

"I'm lazy, but so what, everything is determined anyway, so I can just as well be lazy."

That's fatalism, a nice definition of it by the way. Determinism is the "idea that every event is necessitated by antecedent events and conditions together with the laws of nature".

Why don't you think there is a significant difference? Fatalism is a kind of "it doesn't matter if I wear my seatbelt, my date of death is predetermined". But of course, it does matter if you wear your seatbelt.