sunk costs are retrospective (past) costs which have already been incurred and cannot be recovered.
Opportunity cost is the value of the next best alternative foregone as the result of making a decision.
OK~sunk cost should not be considered when making a decision whereas pportunity cost SHOULD be considered. sunk cost is cost already spent in the past, and opportunity cost arises after some decision is made(or at least right before the decision is made). I see that sunk cost and opportunity cost are two very different costs.
Now, let's apply to my life.
next February, i am going to KAIST MBA. what's the sunk cost? two years of working at samsung sds to fulfill the requirement, which was not really much of fun. how about my opportunity cost? At first, it seems there are a lot of opportunity costs related to going to MBA course, like not getting paid for next two years, two year behind in my career,loosing my social status and so forth. however, the definition of opportunity cost is the value of the 'NEXT BEST' alternative. so it should be a single thing that i am actually giving up. then it narrows to spending two more years in samsung sds- again, where i didn't enjoy much.
conclusion!
but is it that simple?
all of a sudden, i am dragged by the sunk costs and haunted by the opportunity costs.
come on~ you stupid.let's go back to the basic.
the sunk costs cannot be accounted and only one opportunity cost can exist - staying in samsung, yuk.
conclusion again.


