from the silly-rabbit!-toys-aren't-just-for-kids! dept.
jmoyers writes "From the people that brought you the Hoberman Sphere comes the Expandagon Construction System. It allows you to build your own folding structures. "Each building block (called an Expandagon) is made of preassembled parts that allow it to expand and contract. This means that you can build very complex expanding shapes easily, using only a few building blocks."
Thus mathematics may be defined as the subject in which we never know
what we are talking about, nor whether what we are saying is true.
-- Bertrand Russell