We need to build a supply system to cope with the demand.

In the big picture, the whole world at every level, micro, macro, physiological, psychological, material, economical, spiritual, all are a demand-supply problem.

You can do the math. Supply and demand.

Economists always say there is a supply and demand equilibrium.

The demand is far, far exceeding the supply.

From a supply and demand standpoint, there is going to be some rough sledding for a while,