Wait, so your saying that he didn't know about Islam? He did know about Islam, who doesn't? He was a Christian, and every Christian knows about Islam because the two religions are compared very often. And since he knows about the religion of Islam, he will be held accountable for not learning more about it and not accepting it. Its only if you were completely oblivious of the fact that Islam existed that you might have a chance in the akhira. Bro, Newton died a non-Muslim, I dont understand why you are defending him.