I was talking about how God might be known. I don't believe it is necessarily a cognitive function. I don't believe you can "figure out God." I believe it is both simpler and more subtle than that.
Salvation is a whole 'nuther kettle of fish that I may have conflated with knowing. I'd need to understand what you mean by salvation to attempt even a lame response.
Perhaps it will be clearer if I put it this way: Since most religions require faith as a principal component of salvation - what do those who are incapable of it, do? Parasitic twins, the unborn foetus, etc.