LTCM

Long Term Capital Management the hedge fund that famously 'blew up' in 2000 is more topical now than ever.

The below video shows the terrifying power of leverage(borrowing) in financial transactions. Once the mainstay of shamans and narcotic users, predicting the future is massive business in finance.
The latter half of the 20th century saw an exodus from academia to wall street where third rate physicists were tasked with building complicated models to predict the market. From the Black-Scholes options model to rational pricing, it seemed that man's power through mathematics was almost limitless.

Of course not every physicist/mathematician/'quant' was successful, but many on wall street believed large profits could be reliably realised through mathematical methods. As the video implies, ultimately markets reflect human behaviour- and this behaviour, often simplified as greed and fear, is ultimately unpredictable. These people never learn and as history gloriously repeats itself. Try to enjoy the ride and be glad your income is high enough(hopefully) not to be affected by the massive rise in food prices.