No, I'm saying in order to see the future, you would need to understand you are indeed seeing the future. Merely applying the present to a dream/thought you had in the past has nothing to do with seeing the future or being psychic.
When you get Deja Vu you are like stunned and go "Hey, did this happen before?" but you can't picture exactly when or how, you just get the sensation that it did, but these Deja Vus are only short blips. You never have a Deja Vu of the entire day. It is always short, and when the Deja Vu happens you can't remember what happens next, untill after it happens and you go "Hey, didn't I know that was gonna happen?"
What I'm saying is, you can never apply a past memory to the present, untill afterwards. So you have no control or any idea what will happen next, but afterwards you get the feeling it had happened before.