I recently came across a story that changed the way I think about markets. It all started in Ohio, where a farmer named Samuel Benner lost almost everything during an economic crisis. Instead of giving up, he did something extraordinary — he obsessively began analyzing historical price data of pigs, iron, and grain, searching for hidden patterns.

What Benner discovered was fascinating. He noticed that markets are not entirely chaotic — they move in predictable cycles. Peaks, troughs, stabilization. Then again, from the beginning. The Benner cycle, as it was later called, suggested that booms are accompanied by crises every 8-9 years, and more significant upheavals occur every 16-18 years. This was a groundbreaking observation for that era.

What caught my interest — these Benner theories from the 19th century still hold up. Analysts tested his forecasts against the S&P 500 and found that the Benner cycle lines surprisingly align well with major declines: the Great Depression of the 1930s, the dot-com bubble burst at the turn of the century, the 2008 crisis. Of course, the fit isn’t perfect — markets are not machines — but the trend is clear.

There’s something important for all of us here. History shows that markets really do repeat. Understanding the Benner cycle can give you an edge — teach you to recognize peaks to sell and troughs to buy. It’s not a crystal ball, but knowing that declines and rebounds come in waves changes the perspective.

For me, the lesson is clear: you don’t have to be a genius to profit from markets. It’s enough to notice patterns that have repeated for decades. The Benner cycle reminds us that chaos has its logic. It may not make you rich overnight, but it will give you the reason and long-term perspective that investors need.