Does Free Will actually exist? Is there a way to tell?

[Angrboda]

I think Michio Kaku is wrong. Determinism doesn't require that the future be predictable in practice. Our ability to predict the future is irrelevant to whether our future is determined.

I'd say nobody knows if we have free will or not. We probably won't know for sure until we know more about how the brain makes decisions. I lean in favor of hard determinism, but that's largely an argument from ignorance. And compatibilism, which I'd define as redefining free will to make it fit with determinism, has some appeal in its ability to make sense of plain talk of free will. But nobody really knows.