I agree that dreams are a their own thing and you can do what you want.
I think there are different types and degrees of eididic memory, too. I can remember images well but I can't read the text of page I saw from memory. I may remember what the page said but I can't visualize it. Some things stick, some things don't without effort. I guess even with a photographic memory, sometimes you don't bother to load the film.
Also, having an eididic memory doesn't necessarily mean you have total recall. I had a counselor at my university that had total recall. I could drop in unannounced after 6 months and he could pick up the same conversation we'd had the last time I saw him. It was really weird and interesting at the same time.
If Clark had total recall then the Never on Sunday plot wouldn't have worked since Clark would have remembered being placed into the ship.
