The bulb is an archaic term for the medulla oblongata and in modern clinical usage the word bulbar (as in bulbar palsy) is retained for terms that relate to the medulla oblongata, particularly in reference to medical conditions.
Pi is transcendental. The endless number cannot be expressed by any algebraic equation. No pattern has been found in its digits, Yet it cannot be proven in a finite amount of time. That no pattern exists in an infinite number of digits. Pi goes beyond our reality.
A transcendental number is a (possibly complex) number that is not the root of any integer polynomial, meaning that it is not an algebraic number of any degree. Every real transcendental number must also be irrational, since a rational number is, by definition, an algebraic number of degree one.