Yes, it's true, I did a silly thing...
In my absent mindedness, I decided to wander up to Museum station this afternoon on my way home and catch a train home from there, I get to the platform and start wondering why the trains are so few and far between. Finally when I see one I can catch, I suddenly find myself at St James station, then Circular Quay.
Doh! Wrong platform! and going the wrong way!
Never mind, I stayed on the train and headed to McDonald Town and walked home from there.
I think I'm going to pay more attention next time.