Believing in creationism is a sin

[Nerd]

So could it be a lie or be true? We don't know if it is a lie or if it is true because it is simply an opnion. An ignorant opinion, but an opinion noneoftheless. Can an opinion be judged true or false, in this case?

First of all creationism is not a theory it is a hypothesis and that hypothesis has been proven wrong due to evolution so we do know that creationism is false. So yes in this case creationism can be judged as false.