First Sight means you can see what really is there, and Second Thoughts mean thinking about what you are thinking. And in Tiffany's case, there were sometimes Third Thoughts and Fourth Thoughts although these...sometimes led her to walk into doors.

“Sergeant Colon of the Ankh-Morpork City Guard was on duty. He was guarding the …”

“There was a wicked ole witch once called Black Aliss. She was an unholy terror.…”

“Things are not as they seem. They are what they are.”

“Strength enough to build a home, Time enough to hold a child,Love enough to bre…”