text: The only way the stock market would crash again is if everyone borrows money from banks to invest in stocks and never pay the money back. For example buyer A borrows money from the bank and buys stock. buyer A then sells his stock, that he has earned profit off of, to buyer B. buyer B has borrowed money from the bank to purchase from buyer A. buyer b then takes that stock and sells back to buyer A. Buyer A then has borrowed money from the bank to afford the price of the stock buyer B has asked for. this goes on and on, borrowing money from the banks and niether of the buyers has payed the banks back which makes the banks go into default and this results in a stock market crash. so as long as people do not borrow too much money and pay back their loans, we should not have to worry about a depression. Although someone once said....."HISTORY DOES REPEAT ITSELF"