My Critique of Open Theism

I was asked to offer a critique of Open Theism. At one time I embraced it so I'm very familiar with it. But it seems to be an in house argument. Other Christians who are not open theists effectively criticize it. I try not to tell Christians what they should believe. If I spend time critiquing it then I have not debunked Christianity because other Christians would enjoy my critique. I try to offer a more fundamental critique of Christianity and everyone in it, especially conservatives. Conservatives as a whole are my target, not one branch of them.