The scenario
A consumer allocates increased income between movies and popcorn, maintaining a budget constraint. The feedback loop ensures total spending equals income, illustrating the budget line shift mechanism.
What is in this drawing
Read the decisions behind it.
01
Model the consumer as a controller that adjusts spending to match income
02
Use a sum to calculate budget error and a separate sum to aggregate total spending
Educational diagrams for introductory microeconomics, control systems analogies, or when explaining household budget adjustments.
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