Question

Describe how subjectivity and other factors affect a person's calculation of cost and benefit. Give an example of a cost-benefit analysis you have performed.

Answer 1

@Hero

Answer 2

Letting your girlfriend stay in the pad and not help pay the rent = cost but subjectively can be seen as a benefit because she'll be more happier.

Answer 3

This could go a million different ways. The wonders of subjectivity.

Answer 4

Wonders if @Shadow is speaking from direct experience.