english: So I had to compromise with  operational research work, which had the intellectual challenge  that interested me and the commercial value  that was valued by the clients: things like scheduling freight trains, time-tabling buses, stock control, lots and lots of stock control.
non_english: Zato sam morala da balansiram između razvojno-operativnog posla koji je imao intelektualni izazov koji me je zanimao, i komercijalne vrednosti koju su klijenti cenili, stvari poput izrade rasporeda teretnih vozova, voznog reda autobusa, nadzora zaliha - mnogo, mnogo nadzora zaliha.