In conclusion, the discovery of this mysterious number certainly raised more questions than it answered. After Euler's discovery, e started popping out everywhere and over the next few hundred years became the foundation for several applications in probability. We see the biggest impact in the finance industry. Brokers use algorithims involving e to make their clients rich, banks use it to determine your interest, and insurance companies use it to set your premiums. All in all, since the world revolves around money and one's ability to acquire it, e is basically big brother of the root of all evil.