Some inventions operate in a recursive or iterative manner. This could be so of a machine that repeats actions or functions on a single article or to produce multiple articles, or operates on data.

The first list of instructions is obeyed on the way up the spiral i.e. as the instances of the function are being built and the second list is obeyed on the way back down the spiral as the instances ...

Recursion -- the computational capacity to embed elements within elements of the same kind -- has been lauded as the intellectual cornerstone of language, tool use and mathematics. A ...

At a job interview on Friday, I had to write code, and one of the things that came up when we were talking about implementation of a concept was recursion. The director of the group said to me "Don't ...