Time and Space

What would happen if time and space would be exchanged! This can be a concept of next Spielberg blockbuster.
It would be no big deal traveling time. We can easily travel back to our childhood. But then space would be unidirectional. We cannot experience the the same place as before. We can only go forward and forward. No looking back.
And then wise men would say. "Space is money".
Much more interesting can be added to this topic but only when i have space.err.. time.