Isaac Newton said he lost money on the South Sea Bubble financial collapse because, although he could track the movement of stars, he could not calculate the madness of men.

In Canada, the legalization of cannabis in October 2018, unleashed a mania that has seen nearly 1,000 companies receive federal production licences and retailers open nearly 3,500 stores selling cannabis products across the country. It is a short street indeed that doesn’t have a pot shop on it.