Does omniscience require determonism?

As far as Calvinism goes, you make a good observation. Many Calvinists do not consider Jonathan Edwards a Calvinist because of this readon (his arguments concerning omniscience).

 

I agree.

 

I, of course, have more problems with it.

That said, we also have to recognize how what we call "Calvinism" came about.

It arose out of a philosophical disagreement within Calvinism itself.

Arminius could not escape that if God is the root cause of every thing, every event, then God is the cause of evil. Then we have Dort and the divide grew more and more over time.

Calvinism, in the way we speak of it, was a philosophical reaction to a philosophical disagreement over divine sovereignty and free-will.

It is natural that each camp would drift further apart. Reactionary doctrine always works this way. And, typically, the more extreme positions within each sect will be used to stereotype the whole.