Distribution curves are a corner of mathematics somewhat obscure and difficult to understand. This exhibit makes it relevant, interesting and understandable. The Reaction Time and Geiger Counter components show two very different distribution curves where the characteristics of the system emerge after making several Your reaction time is not a fixed number, it is a range with a most probable time. But that time changes when the signal is not random, and changes again when you are randomly distracted. Geiger counter shows the classic exponential decay pattern that comes naturally from truly random events such as the emission of radioactive decay particles. But now you try to be random and build the same curve. Can't do it, eh? Humans like to fall into patterns rather than be random. Interesting.