Tossing a coin is a classical procedure for producing a random number .... Tossing a coin 20 times can produce any one of 2²⁰ ... binary series, and each of them has exactly the same probability.

Perspective view of the gear, showing important parts: b, beam; bl. belly; br, brail; bt, bating; c cod end, or bag;

Photos on opposite page show how material is applied to egg crate framework in making this installation

I tried removing and reinstalling the software, but the reinstall failed.