Vertigo (tales from the Vertigo labs)

The collected stories from the Vertigo Research Labs. How can stairs stop working, when up becomes down? Can something be bigger on the inside than it is on the outside? Jepherson Thomas, janitor at the Vertigo labs, tells all in eleven humorous stories from the world's most unlikely research establishment. Which duplicate Director is the original and which is the copy? How not to make an invisibility cloak, and what happens when funding is withdrawn?