PartSkeptic
Illuminator
Brokers were doing something exactly similar in the 1929 boom.... a great deal of speculative trading was based on credit, what was known as "margin buying". An investor during the 1920s could purchase stock for cash or use his available cash as a ten percent downpayment or margin on a more sizeable purchase with ninety percent financed on loans from stockbrokers. This allowed investors to purchase ten times as much stock as they had money to pay for.
In the 1980s I heard it been sold on the radio as "gearing". If the stock moved up by 2% you got a 20% return if one had a 10x gearing. They never told people that if it moved down by 2% one lost 20% - and then would have to pay in the money to cover the losses.
I have often wondered how much humans have changed in their ability to reason and calculate. Apart from learning, are our brains much the same as 10,000 years ago? Given the repeats of scams and rip-offs it would seem that not much has changed since the time of the Egyptians. The snake oil is always just new and improved, or a new wonder discovery. A new paradigm.
https://www.vocabulary.com/dictionary/paradigm
The word paradigm comes up a lot in the academic, scientific, and business worlds. A new paradigm in business could mean a new way of reaching customers and making money. In education, relying on lectures is a paradigm: if you suddenly shifted to all group work, that would be a new paradigm. When you change paradigms, you're changing how you think about something.