Answer:
People implicitly calculate the costs of and the benefits from an activity to decide if it is worthwhile.
Step-by-step explanation:
The premise that people are rational is one of the pillars of economics. It means that any person will try to maximize the benefits obtained from consuming a product while minimizing the costs of obtaining that product. In other words, we all try to maximize the utils per dollar that we obtain from consuming a good.
We continuously perform a cost-benefit analysis to decide what is best for us.