Summary
Highlights
The video introduces the process of building an economic model from scratch, starting with understanding core components like choice variables, exogenous variables, endogenous variables, benefits, costs, and objective functions.
The presenter defines the choice variable for the model using the example of deciding the number of guests to invite to a wedding, highlighting the importance of understanding whose decision is being modeled.
The process of brainstorming potential costs and benefits of inviting more guests is covered, focusing on validation of relationships, financial costs, and hassle.
After brainstorming, the next step is selecting a few key costs and benefits to focus on, giving each a variable name, such as V for validation, M for money, and H for hassle.
The video explains how to incorporate the chosen variables into a model aimed at maximizing or minimizing an objective function.
The presenter discusses the role of exogenous variables in an economic model, listing potential factors like family size, sensitivity to stress, and income, and assigns them variables.
The method of integrating exogenous variables into the model within relevant cost or benefit functions is described, demonstrating how these variables affect the optimal choice.
The video concludes with a recap on building economic models, emphasizing the importance of the cost-benefit brainstorm table as a fundamental element in the process.