The actuary profession as we know it today began to develop during the 17th century. In 1662 a London cloth merchant named John Graunt showed that patterns of longevity and mortality could be predicted for a defined group of people; In the same century or so, in 1693, Edmond Halley managed to find a method to link the mortality table he calculated to the size of the premium the insured had to pay at a certain age. In 1762, James Dodson founded the Society for Equitable Assurances on Lives and Survivorship, known today as Equitable Life. This was the first insurance company that was based on calculating the amount of the premium using scientific methods (mortality tables, etc.). After a few years the company was transferred to the management of Edward Rowe Mores and his demand was that only an actuary be the director of the company. From then until today, the actuary profession has developed in parallel with the insurance field, today actuaries are involved in a variety of insurance professions such as health, elementary, pension and since the development of the financing field they are also involved in investments.