Tiger by the Tail is a short story by Alan Nourse, which you can read here.
A character claims that the purse can't be turned inside-out because it's a "second-order geometrical form". The term "inner-tube" is also used. But what are those things?
How can the steel bar inserted into the purse come back out, and how can Collins tugging both ends at once affect the universe at the other end? (If you tug both ends of the same steel bar, the bar doesn't move, except for stretching by an imperceptible amount.)
What does the hook on the larger bar hook onto, exactly?
What is a "non-free section"?
Why would the bar going back into the purse affect our universe?
Sorry for asking so many questions, but I can't make sense of this story at all. A diagram would be appreciated.