english: Parents typically get two years of investing dollars, calories and so many other resources in them, so that by the time the second born comes along, the firstborn is already ... it's what corporations call "sunk costs," you don't want to disinvest in this one and launch the R&amp;D on the new product.
non_english: Roditelji najčešće prođu bar dve godine investiranja para, kalorija i svih drugih resursa u njih, stoga kada se rodi drugo dete, prvorođenče je već... to je ono što korporacije nazivaju „potrošna roba”, pa ne želite toliko da ulažete u ovo drugo te eksperimentišete sa ovim novim proizvodom.