- Derivative (Wikipedia)
In mathematics, the derivative shows the sensitivity of change of a function’s output with respect to the input. Derivatives are a fundamental tool of calculus. For example, the derivative of the position of a moving object with respect to time is the object’s velocity: this measures how quickly the position of the object changes when time advances.
- Mind at Large (Wikipedia)
Mind at Large is a concept proposed by Aldous Huxley to help interpret psychedelic experience. He maintained that the human mind filters reality under normal circumstances and that psychedelic drugs remove the filter, exposing the user to a Mind at Large.