is just in time manufacturing risky 
a chief benefit of a jit system is that it minimizes the need for a company to store large quantities of inventory which improves efficiency and provides substantial cost savings however if there is a supply or demand shock it can bring everything to a halt for instance at the beginning of the 2020 s economic crisis everything from ventilators to surgical masks experienced disruption as inputs from overseas could not reach their destinations in time to meet a surge in demand 10