Stocks

Name the places where the scarce thing sits still and piles up between movements. Unlike the arrows, these are the containers you can photograph at a single moment and read a level off. Every flow you draw has to start or end in one.

Name the places where the scarce thing sits still and piles up between movements. Unlike the arrows, these are the containers you can photograph at a single moment and read a level off. Every flow you draw has to start or end in one.

Example

For the household budget, you list four containers holding dollars: the joint checking account at $2,100, the savings account at $4,300, the credit card balance at $1,850 owed, and the $300 sitting in the unpaid "I'll pay you back" pile.