Sequencing Attack Against Coffee Shop Clerks

This here is a story what happened to a friend of mine. It relies on the fact that people enter a kind of trance-like state when they do something monotonous. Behold, the sequencing attack against coffee shop clerks!

Know Your Level of Alertness

The activity happening within the brain is electrochemical by its nature. When this activity is measured, it can be broken down into five major frequency bands: delta, theta, alpha, beta and gamma. Roughly speaking, these bands correspond to certain biological states.
For example, delta waves are prominent in slow wave sleep (SWS, stage 4 of NREM). [...]