2 wrongs don ' t make a right , but 3 rights make a left . <| sep |> You have two options . You can pick only one . Option A You gain 2000 Option B You gain 1000 You pick option B . You ' ve effectively lost 1000 in opportunity cost . Even though you didn ' t have that money technically , it ' s still a loss as the opportunity to gain it is gone . <| sep |> I sold all my SNES , N 64 and PlayStation games when I was in college because I was broke . All my games were complete and in box . Just some of the games I sold were Chrono Trigger , Final Fantasy II and III , Super Metroid , Conker ' s Bad Fur Day , Xenogears , Lunar SSS , Majora ' s Mask and Ocarina of Time , plus a bunch of other games that I can ' t remember at this time . On the bright side , I got decent money for them because I sold them on eBay . The whole retro video game scene was just starting to emerge .