Are assumptions always wrong?

I am not sure what I said in the second post .... but the first one is what I wanted to say for sure ...

I guess here is what I wanted to say to your first post ..

assumptions can be correct but you dont know if they are correct when you are making them .. that is why they are called assumptions ..

deduction is more of a logical conclusion. I guess that means you had all the facts, so a wrong deduction can be more dangerous than a wrong assumption.