How does the fractional reserve banking system impact the overall stability of the financial system?

The fractional reserve banking system can impact the overall stability of the financial system by potentially increasing the risk of bank runs and financial crises. This is because banks only hold a fraction of their deposits in reserve, meaning they may not have enough cash on hand to meet all withdrawal demands in times of economic stress. If many depositors try to withdraw their funds at once, it can lead to a liquidity crisis and destabilize the banking system.