Drug addiction is a serious public health issue that affects millions of people worldwide. It is a complex disease characterized by compulsive drug use despite negative consequences. Drug addiction can have a significant impact on a person's physical and mental health, as well as their social and economic well-being. The...

William Stanley Jevons was an English economist and logician, known for pioneering the Marginalist Revolution and for his use of the differential calculus in economics. William Stanley Jevons (1835-1882) was born in Liverpool to a wealthy merchant family. He entered  University College London , but due to the bankruptcy of the family businesses, he had to withdraw from studies and travel to Sydney, Australia to work for several years at the Mint.