Three men are in a hot-air balloon. Soon they find themselves lost in a canyon. One of the three men says, "I've got an idea. We can call for help in this canyon and the echo will carry our voices far." So he leans over the basket and yells out, "Helllloooooo! Where are we?" They hear the echo several times. Fifteen minutes later, they hear this echoing voice: "Helllloooooo! You're lost!" One of the men says, "That must have been a mathematician." Puzzled, one of the other men asks, "Why do you say that?" "For three reasons. One, he took a long time to answer; two, he was absolutely correct, and three, his answer was absolutely useless."

If you're lost in this website, I hope our help will be a bit more useful than the help of the mathematician from the story above. But since we aren't primarily mathematicians, there might be a good chance. Anyway, to get more jokes or quotes you can always click on Rapunzel on the playground page and she'll be happy to quote you something she's reading.

Here's a general overview of **Mathematica Ludibunda**. First of all, the words in bold are links. When you
click on them, you'll either get more info on the subject, or it will bring you
to the glossary where you will find a definition. Below is a table of how Mathematica Ludibunda is structured.
In the top row are all the chapters; you'll find them on the **playground** and on every page on the lower
left. Below each chapter are listed the sub-chapters; to find these, you first have to go to the right chapter and
there you see them listed on the upper left.